Release v2.6.19

CHANGELOG.md

@@ -2,6 +2,40 @@
 
 All notable changes to this project will be documented in this file.
 
+## 2.6.19 - 2026-08-09
+
+### Changed
+
+- Timetable editor helpers, routes, and table layout now use timetable-specific naming and tighter card/table styling.
+- Connected clients now sort by client identity fields instead of the old IP-based ordering assumption.
+
+## 2.6.18 - 2026-08-09
+
+### Changed
+
+- Timetable tables were renamed from the old `schedule` names to `timetable` names, and existing databases now rename those tables during migration.
+- The timetable group editor now uses timetable-specific naming in its shared helpers and keeps the entries table aligned with the standard admin card/table layout.
+
+## 2.6.17 - 2026-08-09
+
+### Changed
+
+- Existing timetable groups and entries are now migrated to Europe/London, and timetable dates are rewritten to UTC using that source timezone so the wall-clock meaning stays intact.
+
+### Fixed
+
+- New timetable groups now default to Europe/London so the timetable editor and saved data start from the same timezone assumption as the migrated rows.
+
+## 2.6.16 - 2026-08-09
+
+### Changed
+
+- Timetable groups now store an IANA time zone and render their entry datetimes in that timetable time zone, so schedules keep the same wall-clock meaning when they are edited from another country.
+
+### Fixed
+
+- Timetable entry date inputs now round-trip through the timetable time zone instead of the browser locale, so saving from Florida while targeting Germany keeps the intended local times.
+
 ## 2.6.15 - 2026-08-08
 
 ### Fixed

build/package.player.json

@@ -1,6 +1,6 @@
 {
   "name": "pulse-signage-player",
-  "version": "2.6.15",
+  "version": "2.6.19",
   "private": false,
   "description": "Pulse Signage player application bundle",
   "main": "src/common.js",

build/package.web.json

@@ -1,6 +1,6 @@
 {
   "name": "pulse-signage-web",
-  "version": "2.6.15",
+  "version": "2.6.19",
   "private": false,
   "description": "Pulse Signage web and bridge application bundle",
   "main": "src/common.js",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "pulse-signage",
-  "version": "2.6.15",
+  "version": "2.6.19",
   "private": false,
   "description": "Pulse Signage application with MySQL and media storage",
   "repository": {

src/data/index.js

@@ -4,7 +4,7 @@ const { fetchAdminData, fetchPlaylistsPage, fetchSlidesPage, fetchTemplatesPage,
 const { ANNOUNCEMENT_TYPES, ANNOUNCEMENT_COLORS, ANNOUNCEMENT_ICONS, DEFAULT_ANNOUNCEMENT_ICON, normalizeAnnouncementType, normalizeAnnouncementColor, normalizeAnnouncementIcon, fetchAnnouncementsPage, fetchAnnouncementById, fetchActiveAnnouncement, buildAnnouncementPayload } = require('./announcements');
 const { ANNOUNCEMENT_ICON_OPTIONS, ANNOUNCEMENT_ICON_LABELS } = require('./announcement-icons');
 const { fetchPlaylistById } = require('./playlists');
-const { normalizeDisplayMode, fetchTimetablesData, fetchTimetableGroupsPage, fetchTimetableGroupById, fetchTimetableEntriesByGroupId, buildTimetableGroupPayload } = require('./schedules');
+const { normalizeDisplayMode, fetchTimetablesData, fetchTimetableGroupsPage, fetchTimetableGroupById, fetchTimetableEntriesByGroupId, buildTimetableGroupPayload } = require('./timetables');
 const { fetchApiSourcesData, fetchApiSourcesPage, fetchApiSourceById, fetchApiSourceResponse, buildApiSourcePayload } = require('./api-sources');
 const { fetchRssFeedsData, fetchRssFeedsPage, fetchRssFeedById, fetchRssFeedItemsByFeedId, normalizeRssFeedItem, buildRssFeedPayload, fetchRssFeedItems, replaceRssFeedItems } = require('./rss-feeds');
 const { slugify, uniqueScreenSlug, fetchScreenById, fetchScreenEditData, fetchScreenPlayerUrls, fetchPlayerPublicBaseUrl, fetchScreenPlayerRecord, fetchPlayerRecordByIdentifier } = require('./screens');

src/data/slides.js

@@ -308,6 +308,49 @@ async function buildTemplateContent(pool, template, body, filesByField, existing
         value: submitted === undefined ? String(current.value !== undefined ? current.value : current.text !== undefined ? current.text : '') : String(submitted || ''),
         timezone: timezoneValue === undefined || timezoneValue === null ? String(current.timezone || current.time_zone || '') : String(timezoneValue || '').trim()
       };
+    } else if (region.region_type === 'timetable') {
+      const current = existingContent && existingContent[region.region_key] && typeof existingContent[region.region_key] === 'object' ? existingContent[region.region_key] : {};
+      const suffix = '_' + region.id;
+      const generic = {};
+      const submittedText = body[`region_text_${region.id}`];
+      const normalizedText = submittedText === undefined ? String(current.text !== undefined ? current.text : current.value !== undefined ? current.value : '') : String(submittedText || '');
+
+      Object.keys(body || {}).forEach((key) => {
+        if (!key.startsWith('region_') || !key.endsWith(suffix)) {
+          return;
+        }
+
+        const field = key.slice('region_'.length, -suffix.length);
+        if (!field || field === 'type' || field === 'key' || field === 'name' || field === 'label') {
+          return;
+        }
+
+        generic[field] = body[key];
+      });
+
+      if (Object.prototype.hasOwnProperty.call(generic, 'timetable_display_mode')) {
+        generic.display_mode = generic.timetable_display_mode;
+        delete generic.timetable_display_mode;
+      }
+
+      if (Object.prototype.hasOwnProperty.call(generic, 'timetable_max_items')) {
+        generic.max_items = generic.timetable_max_items;
+        delete generic.timetable_max_items;
+      }
+
+      Object.keys(current).forEach((key) => {
+        if (generic[key] === undefined) {
+          generic[key] = current[key];
+        }
+      });
+
+      delete generic.timetable_display_mode;
+      delete generic.timetable_max_items;
+
+      generic.text = normalizedText;
+      generic.value = normalizedText;
+      generic.type = region.region_type;
+      content[region.region_key] = generic;
     } else if (region.region_type === 'rss') {
       const submitted = body[`region_text_${region.id}`];
       const current = existingContent && existingContent[region.region_key] ? existingContent[region.region_key] : {};

src/data/timetables.js

@@ -4,6 +4,23 @@ const { fetchPagedRows, validateMaxLength } = require('./utils');
 
 const NAME_MAX_LENGTH = 255;
 const DESCRIPTION_MAX_LENGTH = 255;
+const DEFAULT_TIME_ZONE = 'Europe/London';
+
+function normalizeTimeZone(value, fallback) {
+  const raw = String(value || '').trim();
+  if (!raw) {
+    return String(fallback || DEFAULT_TIME_ZONE).trim() || DEFAULT_TIME_ZONE;
+  }
+
+  try {
+    new Intl.DateTimeFormat('en-GB', { timeZone: raw }).format(new Date());
+    return raw;
+  } catch (_error) {
+    const error = new Error('Timetable time zone is invalid.');
+    error.statusCode = 400;
+    throw error;
+  }
+}
 
 function normalizeDisplayMode(value) {
   const mode = String(value || 'upcoming').trim().toLowerCase();
@@ -15,15 +32,15 @@ function normalizeDisplayMode(value) {
 
 async function fetchTimetablesData(pool) {
   const [timetableGroups] = await pool.query(`
-    SELECT g.id, g.name, g.short_description, g.created_at, g.modified_at, g.created_by, g.modified_by,
+    SELECT g.id, g.name, g.short_description, g.timezone, g.created_at, g.modified_at, g.created_by, g.modified_by,
-           (SELECT COUNT(*) FROM i_schedule_entries e WHERE e.schedule_group_id = g.id) AS entry_count,
+           (SELECT COUNT(*) FROM i_timetable_entries e WHERE e.schedule_group_id = g.id) AS entry_count,
-           (SELECT MIN(e.start_datetime) FROM i_schedule_entries e WHERE e.schedule_group_id = g.id AND e.start_datetime IS NOT NULL) AS next_start_datetime
+           (SELECT MIN(e.start_datetime) FROM i_timetable_entries e WHERE e.schedule_group_id = g.id AND e.start_datetime IS NOT NULL) AS next_start_datetime
-    FROM i_schedule_groups g
+    FROM i_timetable_groups g
     ORDER BY g.modified_at DESC, g.id DESC
   `);
   const [timetableEntries] = await pool.query(`
     SELECT id, schedule_group_id, title, short_description, start_datetime, end_datetime, created_at, modified_at, created_by, modified_by
-    FROM i_schedule_entries
+    FROM i_timetable_entries
     ORDER BY schedule_group_id ASC, start_datetime ASC, id ASC
   `);
 
@@ -50,17 +67,18 @@ async function fetchTimetablesData(pool) {
 
 async function fetchTimetableGroupsPage(pool, page, pageSize, searchTerm, sortKey, sortDirection) {
   const paged = await fetchPagedRows(pool, {
-    selectSql: `SELECT g.id, g.name, g.short_description, g.created_at, g.modified_at, g.created_by, g.modified_by,
+    selectSql: `SELECT g.id, g.name, g.short_description, g.timezone, g.created_at, g.modified_at, g.created_by, g.modified_by,
-           (SELECT COUNT(*) FROM i_schedule_entries e WHERE e.schedule_group_id = g.id) AS entry_count,
+        (SELECT COUNT(*) FROM i_timetable_entries e WHERE e.schedule_group_id = g.id) AS entry_count,
-           (SELECT MIN(e.start_datetime) FROM i_schedule_entries e WHERE e.schedule_group_id = g.id AND e.start_datetime IS NOT NULL) AS next_start_datetime
+        (SELECT MIN(e.start_datetime) FROM i_timetable_entries e WHERE e.schedule_group_id = g.id AND e.start_datetime IS NOT NULL) AS next_start_datetime
-    FROM i_schedule_groups g
+      FROM i_timetable_groups g
     ORDER BY g.modified_at DESC, g.id DESC`,
-    countSql: 'SELECT COUNT(*) AS count FROM i_schedule_groups',
+      countSql: 'SELECT COUNT(*) AS count FROM i_timetable_groups',
     searchColumns: ['g.name', 'g.short_description'],
     searchTerm: searchTerm,
     sortColumns: {
       name: 'g.name',
       description: 'g.short_description',
+      timezone: 'g.timezone',
       entries: 'entry_count',
       next_start: 'next_start_datetime',
       created: 'g.created_at',
@@ -77,7 +95,7 @@ async function fetchTimetableGroupsPage(pool, page, pageSize, searchTerm, sortKe
 
 async function fetchTimetableGroupById(pool, id) {
   const [rows] = await pool.query(
-    'SELECT id, name, short_description, created_at, modified_at, created_by, modified_by FROM i_schedule_groups WHERE id = ?',
+    'SELECT id, name, short_description, timezone, created_at, modified_at, created_by, modified_by FROM i_timetable_groups WHERE id = ?',
     [id]
   );
 
@@ -87,7 +105,7 @@ async function fetchTimetableGroupById(pool, id) {
 async function fetchTimetableEntriesByGroupId(pool, timetableGroupId) {
   const [rows] = await pool.query(
     `SELECT id, schedule_group_id, title, short_description, start_datetime, end_datetime, created_at, modified_at, created_by, modified_by
-     FROM i_schedule_entries
+     FROM i_timetable_entries
      WHERE schedule_group_id = ?
      ORDER BY start_datetime ASC, id ASC`,
     [timetableGroupId]
@@ -100,6 +118,7 @@ function buildTimetableGroupPayload(req, existingTimetableGroup) {
   const fallback = existingTimetableGroup || {};
   const name = validateMaxLength(req.body.name || fallback.name || '', NAME_MAX_LENGTH, 'Timetable group name');
   const shortDescription = validateMaxLength(req.body.short_description || req.body.shortDescription || fallback.short_description || '', DESCRIPTION_MAX_LENGTH, 'Timetable group description');
+  const timezone = normalizeTimeZone(req.body.timezone || req.body.time_zone || fallback.timezone || DEFAULT_TIME_ZONE, fallback.timezone || DEFAULT_TIME_ZONE);
 
   if (!name) {
     const error = new Error('Timetable group name is required.');
@@ -109,7 +128,8 @@ function buildTimetableGroupPayload(req, existingTimetableGroup) {
 
   return {
     name: name,
-    shortDescription: shortDescription
+    shortDescription: shortDescription,
+    timezone: timezone
   };
 }
 
@@ -119,5 +139,6 @@ module.exports = {
   fetchTimetableGroupsPage,
   fetchTimetableGroupById,
   fetchTimetableEntriesByGroupId,
-  buildTimetableGroupPayload
+  buildTimetableGroupPayload,
+  normalizeTimeZone
 };

src/db/index.js

@@ -238,10 +238,11 @@ async function ensureSchema(pool, options) {
   `);
 
   await pool.query(`
-    CREATE TABLE IF NOT EXISTS i_schedule_groups (
+    CREATE TABLE IF NOT EXISTS i_timetable_groups (
       id INT AUTO_INCREMENT PRIMARY KEY,
       name VARCHAR(255) NOT NULL,
       short_description VARCHAR(255) NULL,
+      timezone VARCHAR(64) NOT NULL DEFAULT 'Europe/London',
       created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
       created_by INT NULL,
       modified_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
@@ -250,7 +251,7 @@ async function ensureSchema(pool, options) {
   `);
 
   await pool.query(`
-    CREATE TABLE IF NOT EXISTS i_schedule_entries (
+    CREATE TABLE IF NOT EXISTS i_timetable_entries (
       id INT AUTO_INCREMENT PRIMARY KEY,
       schedule_group_id INT NOT NULL,
       title VARCHAR(255) NOT NULL,
@@ -261,8 +262,8 @@ async function ensureSchema(pool, options) {
       created_by INT NULL,
       modified_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
       modified_by INT NULL,
-      CONSTRAINT fk_schedule_entries_group FOREIGN KEY (schedule_group_id) REFERENCES i_schedule_groups(id) ON DELETE CASCADE,
+      CONSTRAINT fk_timetable_entries_group FOREIGN KEY (schedule_group_id) REFERENCES i_timetable_groups(id) ON DELETE CASCADE,
-      INDEX idx_schedule_entries_group_start (schedule_group_id, start_datetime)
+      INDEX idx_timetable_entries_group_start (schedule_group_id, start_datetime)
     ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci
   `);
 

src/db/migrations.js

@@ -1,4 +1,5 @@
 const { version: appVersion } = require('#root/package.json');
+const TIMETABLE_TIME_ZONE = 'Europe/London';
 
 const VERSIONED_MIGRATIONS = [
   {
@@ -56,7 +57,6 @@ const VERSIONED_MIGRATIONS = [
       if (await columnExists(pool, 'c_template_regions', 'font_family')) {
         await pool.query('ALTER TABLE c_template_regions DROP COLUMN font_family');
       }
-
     }
   },
   {
@@ -276,6 +276,7 @@ const VERSIONED_MIGRATIONS = [
       await pool.query('RENAME TABLE d_players_rebuild TO d_players');
 
       await pool.query('ALTER TABLE d_screens MODIFY COLUMN player_id INT NULL AFTER playlist_id');
+      return;
     }
   },
   {
@@ -295,6 +296,71 @@ const VERSIONED_MIGRATIONS = [
       await dropForeignKeyIfExists(pool, 'd_screens', 'player_id');
       await dropColumnIfExists(pool, 'd_screens', 'player_id');
     }
+  },
+  {
+    version: '2.6.16',
+    label: 'v2.6.16 timetable timezone schema',
+    run: async function (pool) {
+      await ensureColumn(pool, 'i_schedule_groups', 'timezone', "VARCHAR(64) NOT NULL DEFAULT 'Europe/London'", 'short_description');
+    }
+  },
+  {
+    version: '2.6.17',
+    label: 'v2.6.17 timetable europe/london conversion',
+    run: async function (pool) {
+      await ensureColumn(pool, 'i_schedule_groups', 'timezone', "VARCHAR(64) NOT NULL DEFAULT 'Europe/London'", 'short_description');
+
+      await pool.query('UPDATE i_schedule_groups SET timezone = ?', [TIMETABLE_TIME_ZONE]);
+
+      const [rows] = await pool.query('SELECT id, start_datetime, end_datetime FROM i_schedule_entries ORDER BY id ASC');
+      for (const row of rows) {
+        const startDate = convertMigrationDateTimeFromTimeZone(row.start_datetime, TIMETABLE_TIME_ZONE);
+        const endDate = row.end_datetime ? convertMigrationDateTimeFromTimeZone(row.end_datetime, TIMETABLE_TIME_ZONE) : null;
+        await pool.query(
+          'UPDATE i_schedule_entries SET start_datetime = ?, end_datetime = ? WHERE id = ?',
+          [formatMigrationDateTimeUtc(startDate), endDate ? formatMigrationDateTimeUtc(endDate) : null, row.id]
+        );
+      }
+    }
+  },
+  {
+    version: '2.6.18',
+    label: 'v2.6.18 timetable table rename',
+    run: async function (pool) {
+      const scheduleGroupsExists = await tableExists(pool, 'i_schedule_groups');
+      const timetableGroupsExists = await tableExists(pool, 'i_timetable_groups');
+
+      if (scheduleGroupsExists) {
+        if (!timetableGroupsExists) {
+          await pool.query('RENAME TABLE i_schedule_groups TO i_timetable_groups, i_schedule_entries TO i_timetable_entries');
+          return;
+        }
+
+        await pool.query(`
+          INSERT IGNORE INTO i_timetable_groups (id, name, short_description, timezone, created_at, created_by, modified_at, modified_by)
+          SELECT id, name, short_description, timezone, created_at, created_by, modified_at, modified_by
+          FROM i_schedule_groups
+          ORDER BY id ASC
+        `);
+
+        await pool.query(`
+          INSERT IGNORE INTO i_timetable_entries (id, schedule_group_id, title, short_description, start_datetime, end_datetime, created_at, created_by, modified_at, modified_by)
+          SELECT id, schedule_group_id, title, short_description, start_datetime, end_datetime, created_at, created_by, modified_at, modified_by
+          FROM i_schedule_entries
+          ORDER BY schedule_group_id ASC, start_datetime ASC, id ASC
+        `);
+
+        const [groupRows] = await pool.query('SELECT COALESCE(MAX(id), 0) AS max_id FROM i_timetable_groups');
+        const [entryRows] = await pool.query('SELECT COALESCE(MAX(id), 0) AS max_id FROM i_timetable_entries');
+        const nextGroupId = Number(groupRows && groupRows[0] && groupRows[0].max_id) + 1;
+        const nextEntryId = Number(entryRows && entryRows[0] && entryRows[0].max_id) + 1;
+        await pool.query('ALTER TABLE i_timetable_groups AUTO_INCREMENT = ' + nextGroupId);
+        await pool.query('ALTER TABLE i_timetable_entries AUTO_INCREMENT = ' + nextEntryId);
+
+        await pool.query('DROP TABLE i_schedule_entries');
+        await pool.query('DROP TABLE i_schedule_groups');
+      }
+    }
   }
 ];
 
@@ -311,6 +377,18 @@ async function columnExists(pool, tableName, columnName) {
   return Number(rows && rows[0] && rows[0].column_count) > 0;
 }
 
+async function tableExists(pool, tableName) {
+  const [rows] = await pool.query(
+    `SELECT COUNT(*) AS table_count
+     FROM information_schema.TABLES
+     WHERE TABLE_SCHEMA = DATABASE()
+       AND TABLE_NAME = ?`,
+    [tableName]
+  );
+
+  return Number(rows && rows[0] && rows[0].table_count) > 0;
+}
+
 async function columnIsAutoIncrement(pool, tableName, columnName) {
   const [rows] = await pool.query(
     `SELECT COUNT(*) AS auto_increment_count
@@ -512,6 +590,107 @@ function formatMigrationDateTime(value) {
   return year + '-' + month + '-' + day + 'T' + hours + ':' + minutes;
 }
 
+function parseMigrationDateTimeParts(value) {
+  if (!value) {
+    return null;
+  }
+
+  if (value instanceof Date) {
+    if (Number.isNaN(value.getTime())) {
+      return null;
+    }
+
+    return {
+      year: value.getUTCFullYear(),
+      month: value.getUTCMonth() + 1,
+      day: value.getUTCDate(),
+      hour: value.getUTCHours(),
+      minute: value.getUTCMinutes(),
+      second: value.getUTCSeconds()
+    };
+  }
+
+  const raw = String(value || '').trim();
+  const match = raw.match(/^(\d{4})-(\d{2})-(\d{2})(?:[ T](\d{2}):(\d{2})(?::(\d{2}))?)?$/);
+  if (!match) {
+    return null;
+  }
+
+  return {
+    year: Number(match[1]),
+    month: Number(match[2]),
+    day: Number(match[3]),
+    hour: Number(match[4] || 0),
+    minute: Number(match[5] || 0),
+    second: Number(match[6] || 0)
+  };
+}
+
+function getMigrationTimeZoneOffsetMillis(date, timeZone) {
+  if (!(date instanceof Date) || Number.isNaN(date.getTime())) {
+    return 0;
+  }
+
+  const parts = new Intl.DateTimeFormat('en-GB', {
+    timeZone: timeZone,
+    hour12: false,
+    year: 'numeric',
+    month: '2-digit',
+    day: '2-digit',
+    hour: '2-digit',
+    minute: '2-digit',
+    second: '2-digit'
+  }).formatToParts(date).reduce(function (acc, part) {
+    if (part && part.type && part.type !== 'literal') {
+      acc[part.type] = part.value;
+    }
+    return acc;
+  }, Object.create(null));
+
+  const localAsUtc = Date.UTC(
+    Number(parts.year) || 0,
+    (Number(parts.month) || 1) - 1,
+    Number(parts.day) || 1,
+    Number(parts.hour) || 0,
+    Number(parts.minute) || 0,
+    Number(parts.second) || 0,
+    0
+  );
+
+  return localAsUtc - date.getTime();
+}
+
+function convertMigrationDateTimeFromTimeZone(value, timeZone) {
+  const parts = parseMigrationDateTimeParts(value);
+  if (!parts) {
+    return null;
+  }
+
+  const utcMillis = Date.UTC(parts.year, parts.month - 1, parts.day, parts.hour, parts.minute, parts.second, 0);
+  let adjusted = new Date(utcMillis - getMigrationTimeZoneOffsetMillis(new Date(utcMillis), timeZone));
+  const adjustedOffset = getMigrationTimeZoneOffsetMillis(adjusted, timeZone);
+
+  if (adjustedOffset !== getMigrationTimeZoneOffsetMillis(new Date(utcMillis), timeZone)) {
+    adjusted = new Date(utcMillis - adjustedOffset);
+  }
+
+  return adjusted;
+}
+
+function formatMigrationDateTimeUtc(value) {
+  if (!(value instanceof Date) || Number.isNaN(value.getTime())) {
+    return null;
+  }
+
+  const year = value.getUTCFullYear();
+  const month = String(value.getUTCMonth() + 1).padStart(2, '0');
+  const day = String(value.getUTCDate()).padStart(2, '0');
+  const hours = String(value.getUTCHours()).padStart(2, '0');
+  const minutes = String(value.getUTCMinutes()).padStart(2, '0');
+  const seconds = String(value.getUTCSeconds()).padStart(2, '0');
+  return year + '-' + month + '-' + day + ' ' + hours + ':' + minutes + ':' + seconds;
+}
+
 function formatMigrationTime(value) {
   if (!value) {
     return null;
@@ -568,6 +747,8 @@ async function runMigrations(pool, options) {
   const currentVersion = String(options && options.currentVersion || '0.0.0').trim();
   const legacyPlayerSchemaPresent = await columnExists(pool, 'd_players', 'device_id');
   const screenPlayerColumnPresent = await columnExists(pool, 'd_screens', 'player_id');
+  const legacyTimetableGroupsPresent = await tableExists(pool, 'i_schedule_groups');
+  const legacyTimetableEntriesPresent = await tableExists(pool, 'i_schedule_entries');
   let effectiveCurrentVersion = currentVersion;
 
   if (!legacyPlayerSchemaPresent && compareVersions(effectiveCurrentVersion, '2.1.0') < 0) {
@@ -578,6 +759,10 @@ async function runMigrations(pool, options) {
     effectiveCurrentVersion = '2.6.3';
   }
 
+  if (legacyTimetableGroupsPresent || legacyTimetableEntriesPresent) {
+    effectiveCurrentVersion = compareVersions(effectiveCurrentVersion, '2.6.18') < 0 ? '2.6.17' : '2.6.17';
+  }
+
   for (const migration of VERSIONED_MIGRATIONS) {
     if (compareVersions(migration.version, effectiveCurrentVersion) > 0 && compareVersions(migration.version, targetVersion) <= 0) {
       await migration.run(pool);

src/player/regions/schedule.js

@@ -228,6 +228,7 @@ function renderRegion(region, regionContent) {
   var maxItems = regionContent && regionContent.max_items !== undefined ? regionContent.max_items : 5;
   var group = getGroupById(groupId, groups);
   var entries = getVisibleEntries(groupId, displayMode, maxItems, groups);
+  var timeZone = group && (group.timezone || group.time_zone) ? String(group.timezone || group.time_zone) : '';
   var width = Math.max(1, Math.round(Number(region && region.pixelWidth ? region.pixelWidth : 0) || 1));
   var height = Math.max(1, Math.round(Number(region && region.pixelHeight ? region.pixelHeight : 0) || 1));
   var canvasScale = Number(region && region.canvasScale ? region.canvasScale : 1) || 1;
@@ -241,6 +242,7 @@ function renderRegion(region, regionContent) {
     return '<div class="timetable-region-entry" data-timetable-entry-index="' + index + '">' + sanitizeRichText(substituteTimetableVariables(value, Object.assign({}, entry || {}, {
       start: entry && entry.start_datetime !== undefined ? entry.start_datetime : '',
       end: entry && entry.end_datetime !== undefined ? entry.end_datetime : '',
+      timeZone: timeZone,
       group: group || {},
       entries: entries,
       index: index + 1

src/player/regions/time-date.js

@@ -233,7 +233,7 @@ function renderTemplate(format, timeZone, date) {
   var template = String(format || '').trim() || DEFAULT_FORMAT;
   var values = getFormattedParts(timeZone, date);
   return template.replace(/\{\{\s*([a-zA-Z0-9_.()\-]+)\s*\}\}/g, function (_match, key) {
-    return String(resolveTimeDatePlaceholder(values, key) || '');
+    return String(resolveTimeDatePlaceholder(values, key, { timeZone: timeZone }) || '');
   });
 }
 

src/web/public/css/theme-custom.css

@@ -756,6 +756,38 @@
   background: var(--bs-tertiary-bg);
 }
 
+.timetable-entries-table-shell {
+  overflow: hidden;
+  border-bottom-left-radius: calc(var(--bs-border-radius) - 1px);
+  border-bottom-right-radius: calc(var(--bs-border-radius) - 1px);
+}
+
+.timetable-entries-table-shell > .table-responsive {
+  margin-bottom: 0;
+}
+
+.timetable-entries-table {
+  border-collapse: collapse;
+}
+
+.timetable-entries-table > thead > tr:first-child > * {
+  border-top-width: 0;
+}
+
+.timetable-entries-table > :not(caption) > * > :first-child {
+  border-left-width: 0;
+  padding-left: 0;
+}
+
+.timetable-entries-table > :not(caption) > * > :last-child {
+  border-right-width: 0;
+  padding-right: 0;
+}
+
+.timetable-entries-table > tbody > tr:last-child > * {
+  border-bottom-width: 0;
+}
+
 .api-source-section-heading {
   display: flex;
   align-items: center;

src/web/public/js/data-sources/timetable-group-form.js

@@ -2,14 +2,17 @@
 
 (function () {
   var form = document.getElementById('timetable-group-form');
+  var timezoneInput = document.getElementById('timetable-group-timezone');
   var body = document.querySelector('[data-timetable-entries-body]');
   var addButton = document.querySelector('[data-add-timetable-entry]');
   var template = document.getElementById('timetable-entry-row-template');
 
-  if (!form || !body || !addButton || !template) {
+  if (!form || !timezoneInput || !body || !addButton || !template) {
     return;
   }
 
+  var DEFAULT_TIME_ZONE = 'Europe/London';
+
   function markDirty() {
     form.dataset.dirty = 'true';
   }
@@ -18,43 +21,150 @@
     return String(value).padStart(2, '0');
   }
 
-  function formatDateTimeLocalValue(date) {
+  function getDefaultTimeZone() {
+    try {
+      return Intl.DateTimeFormat().resolvedOptions().timeZone || DEFAULT_TIME_ZONE;
+    } catch (_error) {
+      return DEFAULT_TIME_ZONE;
+    }
+  }
+
+  function resolveTimeZone(value) {
+    var raw = String(value || '').trim();
+    if (!raw) {
+      return getDefaultTimeZone();
+    }
+
+    try {
+      new Intl.DateTimeFormat('en-GB', { timeZone: raw }).format(new Date());
+      return raw;
+    } catch (_error) {
+      return getDefaultTimeZone();
+    }
+  }
+
+  function parseDateTimeLocalParts(value) {
+    var raw = String(value || '').trim();
+    var match = raw.match(/^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2})(?::(\d{2}))?$/);
+    if (!match) {
+      return null;
+    }
+
+    return {
+      year: Number(match[1]),
+      month: Number(match[2]),
+      day: Number(match[3]),
+      hour: Number(match[4]),
+      minute: Number(match[5]),
+      second: Number(match[6] || '0')
+    };
+  }
+
+  function getDateTimeParts(date, timeZone) {
     if (!(date instanceof Date) || Number.isNaN(date.getTime())) {
+      return null;
+    }
+
+    var resolvedTimeZone = resolveTimeZone(timeZone);
+    var parts = new Intl.DateTimeFormat('en-GB', {
+      timeZone: resolvedTimeZone,
+      hour12: false,
+      year: 'numeric',
+      month: '2-digit',
+      day: '2-digit',
+      hour: '2-digit',
+      minute: '2-digit',
+      second: '2-digit'
+    }).formatToParts(date);
+    var mapped = Object.create(null);
+
+    parts.forEach(function (part) {
+      if (part && part.type && part.type !== 'literal') {
+        mapped[part.type] = part.value;
+      }
+    });
+
+    return mapped;
+  }
+
+  function formatDateTimeLocalValue(date, timeZone) {
+    var parts = getDateTimeParts(date, timeZone);
+    if (!parts) {
       return '';
     }
 
     return [
-      String(date.getFullYear()).padStart(4, '0'),
+      String(parts.year || '').padStart(4, '0'),
       '-',
-      pad(date.getMonth() + 1),
+      pad(parts.month),
       '-',
-      pad(date.getDate()),
+      pad(parts.day),
       'T',
-      pad(date.getHours()),
+      pad(parts.hour),
       ':',
-      pad(date.getMinutes())
+      pad(parts.minute)
     ].join('');
   }
 
-  function parseUtcDateTimeLocalValue(value) {
+  function getTimeZoneOffsetMillis(date, timeZone) {
+    var parts = getDateTimeParts(date, timeZone);
+    if (!parts) {
+      return 0;
+    }
+
+    var localAsUtc = Date.UTC(
+      Number(parts.year) || 0,
+      (Number(parts.month) || 1) - 1,
+      Number(parts.day) || 1,
+      Number(parts.hour) || 0,
+      Number(parts.minute) || 0,
+      Number(parts.second) || 0,
+      0
+    );
+
+    return localAsUtc - date.getTime();
+  }
+
+  function parseDateTimeLocalAsUtc(value, timeZone) {
+    var raw = String(value || '').trim();
+    var isoDate;
+    var parts = parseDateTimeLocalParts(value);
+    if (!parts) {
+      isoDate = /(?:[zZ]|[+-]\d\d(?::?\d\d)?)$/.test(raw) ? new Date(raw) : null;
+      return isoDate && !Number.isNaN(isoDate.getTime()) ? isoDate : null;
+    }
+
+    var resolvedTimeZone = resolveTimeZone(timeZone);
+    var utcMillis = Date.UTC(parts.year, parts.month - 1, parts.day, parts.hour, parts.minute, parts.second, 0);
+    var date = new Date(utcMillis);
+    var offset = getTimeZoneOffsetMillis(date, resolvedTimeZone);
+    var adjusted = new Date(utcMillis - offset);
+    var adjustedOffset = getTimeZoneOffsetMillis(adjusted, resolvedTimeZone);
+
+    if (adjustedOffset !== offset) {
+      adjusted = new Date(utcMillis - adjustedOffset);
+    }
+
+    return Number.isNaN(adjusted.getTime()) ? null : adjusted;
+  }
+
+  function convertDateTimeLocalValue(value, sourceTimeZone, targetTimeZone) {
     var raw = String(value || '').trim();
     if (!raw) {
-      return null;
+      return '';
     }
 
-    var normalized = /(?:[zZ]|[+-]\d\d(?::?\d\d)?)$/.test(raw) ? raw : raw + 'Z';
+    var utcDate = parseDateTimeLocalAsUtc(raw, sourceTimeZone);
-    var date = new Date(normalized);
+    if (!utcDate) {
-    return Number.isNaN(date.getTime()) ? null : date;
+      return '';
     }
 
-  function parseDateTimeLocalValue(value) {
+    var resolvedTargetTimeZone = resolveTimeZone(targetTimeZone);
-    var raw = String(value || '').trim();
+    if (resolvedTargetTimeZone === 'UTC') {
-    if (!raw) {
+      return utcDate.toISOString();
-      return null;
     }
 
-    var date = new Date(raw);
+    return formatDateTimeLocalValue(utcDate, resolvedTargetTimeZone);
-    return Number.isNaN(date.getTime()) ? null : date;
   }
 
   function clearFieldValidity(input) {
@@ -82,17 +192,21 @@
   }
 
   function validateEntryRow(row) {
-    if (!row) {
+    var timezone = resolveTimeZone(timezoneInput.value);
-      return;
+    var startInput;
-    }
+    var endInput;
-
-    var startInput = row.querySelector('[name="entry_start_datetime[]"]');
-    var endInput = row.querySelector('[name="entry_end_datetime[]"]');
     var startValue;
     var endValue;
     var startDate;
     var endDate;
 
+    if (!row) {
+      return;
+    }
+
+    startInput = row.querySelector('[name="entry_start_datetime[]"]');
+    endInput = row.querySelector('[name="entry_end_datetime[]"]');
+
     clearFieldValidity(endInput);
 
     if (!startInput || !endInput) {
@@ -106,8 +220,8 @@
       return;
     }
 
-    startDate = parseDateTimeLocalValue(startValue);
+    startDate = parseDateTimeLocalAsUtc(startValue, timezone);
-    endDate = parseDateTimeLocalValue(endValue);
+    endDate = parseDateTimeLocalAsUtc(endValue, timezone);
 
     if (!startDate || !endDate) {
       return;
@@ -119,12 +233,15 @@
   }
 
   function bindRowValidation(row) {
+    var startInput;
+    var endInput;
+
     if (!row) {
       return;
     }
 
-    var startInput = row.querySelector('[name="entry_start_datetime[]"]');
+    startInput = row.querySelector('[name="entry_start_datetime[]"]');
-    var endInput = row.querySelector('[name="entry_end_datetime[]"]');
+    endInput = row.querySelector('[name="entry_end_datetime[]"]');
 
     if (!startInput || !endInput) {
       return;
@@ -142,32 +259,37 @@
     validateEntryRow(row);
   }
 
-  function toUtcDateTimeLocalValue(value) {
+  function syncRowValuesToTimeZone(row, sourceTimeZone, targetTimeZone) {
-    var localDate = new Date(String(value || '').trim());
-    return Number.isNaN(localDate.getTime()) ? '' : localDate.toISOString();
-  }
-
-  function syncRowValuesToLocal(row) {
     if (!row) {
       return;
     }
 
     ['entry_start_datetime[]', 'entry_end_datetime[]'].forEach(function (name) {
       var input = row.querySelector('[name="' + name + '"]');
-      if (!input || input.dataset.timetableTimezoneSynced === 'true') {
+      var convertedValue;
+
+      if (!input) {
         return;
       }
 
-      var localValue = formatDateTimeLocalValue(parseUtcDateTimeLocalValue(input.value));
+      convertedValue = convertDateTimeLocalValue(input.value, sourceTimeZone, targetTimeZone);
-      if (localValue) {
+      if (convertedValue) {
-        input.value = localValue;
+        input.value = convertedValue;
       }
-      input.dataset.timetableTimezoneSynced = 'true';
+    });
+  }
+
+  function syncAllRowsToTimeZone(sourceTimeZone, targetTimeZone) {
+    body.querySelectorAll('[data-timetable-entry-row]').forEach(function (row) {
+      syncRowValuesToTimeZone(row, sourceTimeZone, targetTimeZone);
+      validateEntryRow(row);
     });
   }
 
   function syncFormDataToUtc(formData) {
     var rows = body.querySelectorAll('[data-timetable-entry-row]');
+    var currentTimeZone = resolveTimeZone(timezoneInput.value);
+
     ['entry_id[]', 'entry_title[]', 'entry_short_description[]', 'entry_start_datetime[]', 'entry_end_datetime[]'].forEach(function (name) {
       formData.delete(name);
     });
@@ -182,8 +304,8 @@
       formData.append('entry_id[]', idInput ? idInput.value : '');
       formData.append('entry_title[]', titleInput ? titleInput.value : '');
       formData.append('entry_short_description[]', descriptionInput ? descriptionInput.value : '');
-      formData.append('entry_start_datetime[]', startInput ? toUtcDateTimeLocalValue(startInput.value) : '');
+      formData.append('entry_start_datetime[]', startInput ? convertDateTimeLocalValue(startInput.value, currentTimeZone, 'UTC') : '');
-      formData.append('entry_end_datetime[]', endInput ? toUtcDateTimeLocalValue(endInput.value) : '');
+      formData.append('entry_end_datetime[]', endInput ? convertDateTimeLocalValue(endInput.value, currentTimeZone, 'UTC') : '');
     });
   }
 
@@ -210,9 +332,16 @@
     markDirty();
   }
 
+  function handleTimezoneChange() {
+    var nextTimeZone = resolveTimeZone(timezoneInput.value || DEFAULT_TIME_ZONE);
+    form.dataset.timetableTimezone = nextTimeZone;
+    markDirty();
+  }
+
+  form.dataset.timetableTimezone = resolveTimeZone(timezoneInput.value || DEFAULT_TIME_ZONE);
+
   body.querySelectorAll('[data-timetable-entry-row]').forEach(function (row) {
     bindRemove(row);
-    syncRowValuesToLocal(row);
     bindRowValidation(row);
   });
 
@@ -220,5 +349,8 @@
     syncFormDataToUtc(event.formData);
   });
 
+  timezoneInput.addEventListener('change', handleTimezoneChange);
+  timezoneInput.addEventListener('input', handleTimezoneChange);
+
   addButton.addEventListener('click', addRow);
 }());

src/web/public/js/regions/type/api.js

@@ -272,8 +272,18 @@
   function buildPreviewRenderContext(region, card, existingContent, sources) {
     var current = getCurrentConfig(region, existingContent || {}, sources || []);
     var editor = window.tinymce && typeof window.tinymce.get === 'function' ? window.tinymce.get('slide-editor-region-' + region.id) : null;
+    var fallbackValue = card && card.querySelector ? ((card.querySelector('textarea[name="region_text_' + region.id + '"]') || {}).value || current.value || '') : current.value;
     var content = card && card.querySelector ? {
-      value: String(editor ? editor.getContent({ format: 'html' }) : ((card.querySelector('textarea[name="region_text_' + region.id + '"]') || {}).value || current.value || '')),
+      value: String((function () {
+        if (!editor || typeof editor.getContent !== 'function') {
+          return fallbackValue;
+        }
+        try {
+          return editor.getContent({ format: 'html' });
+        } catch (_error) {
+          return fallbackValue;
+        }
+      }())),
       source_id: (card.querySelector('select[name="region_api_source_id_' + region.id + '"]') || {}).value || current.source_id,
       item_number: (card.querySelector('input[name="region_api_item_number_' + region.id + '"]') || {}).value || current.item_number,
       items_path: card.querySelector('input[name="region_api_items_path_' + region.id + '"]') ? (card.querySelector('input[name="region_api_items_path_' + region.id + '"]') || {}).value : current.items_path

src/web/public/js/regions/type/rss.js

@@ -277,8 +277,18 @@
   function buildPreviewRenderContext(region, card, existingContent, feeds) {
     var current = getCurrentConfig(region, existingContent || {});
     var editor = window.tinymce && typeof window.tinymce.get === 'function' ? window.tinymce.get('slide-editor-region-' + region.id) : null;
+    var fallbackValue = card && card.querySelector ? ((card.querySelector('textarea[name="region_text_' + region.id + '"]') || {}).value || current.value || '') : current.value;
     var content = card && card.querySelector ? {
-      value: String(editor ? editor.getContent({ format: 'html' }) : ((card.querySelector('textarea[name="region_text_' + region.id + '"]') || {}).value || current.value || '')),
+      value: String((function () {
+        if (!editor || typeof editor.getContent !== 'function') {
+          return fallbackValue;
+        }
+        try {
+          return editor.getContent({ format: 'html' });
+        } catch (_error) {
+          return fallbackValue;
+        }
+      }())),
       feed_id: (card.querySelector('select[name="region_rss_feed_id_' + region.id + '"]') || {}).value || current.feed_id,
       item_number: (card.querySelector('input[name="region_rss_item_number_' + region.id + '"]') || {}).value || current.item_number
     } : current;

src/web/public/js/regions/type/schedule.js

@@ -43,6 +43,52 @@
     return group && Array.isArray(group.entries) ? group.entries : [];
   }
 
+  function getDefaultTimeZone() {
+    try {
+      return Intl.DateTimeFormat().resolvedOptions().timeZone || 'UTC';
+    } catch (_error) {
+      return 'UTC';
+    }
+  }
+
+  function resolveTimeZone(value) {
+    var raw = String(value || '').trim();
+    if (!raw) {
+      return getDefaultTimeZone();
+    }
+
+    try {
+      new Intl.DateTimeFormat('en-GB', { timeZone: raw }).format(new Date());
+      return raw;
+    } catch (_error) {
+      return getDefaultTimeZone();
+    }
+  }
+
+  function getTimezoneValues(group, dateValue) {
+    var timeZone = resolveTimeZone(group && (group.timezone || group.time_zone || ''));
+    var shortName = timeZone;
+    var targetDate = dateValue instanceof Date ? dateValue : new Date(dateValue || Date.now());
+
+    try {
+      var parts = new Intl.DateTimeFormat('en-GB', {
+        timeZone: timeZone,
+        timeZoneName: 'short'
+      }).formatToParts(Number.isNaN(targetDate.getTime()) ? new Date() : targetDate);
+      var timeZonePart = parts.find(function (part) {
+        return part && part.type === 'timeZoneName';
+      });
+      shortName = timeZonePart && timeZonePart.value ? String(timeZonePart.value) : timeZone;
+    } catch (_error) {
+      shortName = timeZone;
+    }
+
+    return {
+      tz: timeZone,
+      tz_short: shortName
+    };
+  }
+
   function toDate(value) {
     if (!value) {
       return null;
@@ -119,9 +165,9 @@
     var current = existingContent[region.region_key] || {};
     return {
       timetable_group_id: current.timetable_group_id === undefined || current.timetable_group_id === null || current.timetable_group_id === '' ? '' : Number(current.timetable_group_id),
-      display_mode: String(current.display_mode || 'upcoming').trim().toLowerCase() || 'upcoming',
+      display_mode: String(current.display_mode || current.timetable_display_mode || 'upcoming').trim().toLowerCase() || 'upcoming',
-      value: String(current.value !== undefined ? current.value : current.text !== undefined ? current.text : ''),
+      value: String(current.text !== undefined ? current.text : current.value !== undefined ? current.value : ''),
-      max_items: Math.max(1, Number(current.max_items || 5)),
+      max_items: Math.max(1, Number(current.max_items || current.timetable_max_items || 5)),
       font_family: current.font_family || region.font_family || getDefaultStyle().font_family,
       font_size: current.font_size || region.font_size || getDefaultStyle().font_size,
       font_color: current.font_color || region.font_color || getDefaultStyle().font_color
@@ -143,14 +189,47 @@
     }).join('');
   }
 
+  function renderScheduleFormatTokenTable() {
+    if (window.timeDatePlaceholders && typeof window.timeDatePlaceholders.renderTable === 'function') {
+      return window.timeDatePlaceholders.renderTable();
+    }
+
+    return '' +
+      '<div class="table-responsive">' +
+        '<table class="table table-sm align-middle mb-0">' +
+          '<thead><tr><th scope="col">Format</th><th scope="col">Output</th><th scope="col">Description</th></tr></thead>' +
+          '<tbody>' +
+            '<tr><td><code>h</code></td><td>1-12</td><td>The hour, 12-hour clock</td></tr>' +
+            '<tr><td><code>hh</code></td><td>01-12</td><td>The hour, 12-hour clock, 2-digits</td></tr>' +
+            '<tr><td><code>m</code></td><td>0-59</td><td>The minute</td></tr>' +
+            '<tr><td><code>mm</code></td><td>00-59</td><td>The minute, 2-digits</td></tr>' +
+            '<tr><td><code>s</code></td><td>0-59</td><td>The second</td></tr>' +
+            '<tr><td><code>ss</code></td><td>00-59</td><td>The second, 2-digits</td></tr>' +
+            '<tr><td><code>A</code></td><td>AM/PM</td><td>Uppercase day period</td></tr>' +
+            '<tr><td><code>a</code></td><td>am/pm</td><td>Lowercase day period</td></tr>' +
+            '<tr><td><code>D</code></td><td>1-31</td><td>The day of the month</td></tr>' +
+            '<tr><td><code>DD</code></td><td>01-31</td><td>The day of the month, 2-digits</td></tr>' +
+            '<tr><td><code>ddd</code></td><td>Mon</td><td>The abbreviated weekday name</td></tr>' +
+            '<tr><td><code>dddd</code></td><td>Monday</td><td>The full weekday name</td></tr>' +
+            '<tr><td><code>M</code></td><td>1-12</td><td>The month, beginning at 1</td></tr>' +
+            '<tr><td><code>MM</code></td><td>01-12</td><td>The month, 2-digits</td></tr>' +
+            '<tr><td><code>MMM</code></td><td>Jan-Dec</td><td>The abbreviated month name</td></tr>' +
+            '<tr><td><code>MMMM</code></td><td>January-December</td><td>The full month name</td></tr>' +
+            '<tr><td><code>YY</code></td><td>18</td><td>The two-digit year</td></tr>' +
+            '<tr><td><code>YYYY</code></td><td>2018</td><td>The four-digit year</td></tr>' +
+          '</tbody>' +
+        '</table>' +
+      '</div>';
+  }
+
   function getCurrentSelection(regionId, card, existingContent, timetableGroups) {
     var current = existingContent[regionId] || {};
     var timetableGroupInput = card && card.querySelector ? card.querySelector('select[name="region_timetable_group_id_' + regionId + '"]') : null;
     var timetableDisplayModeInput = card && card.querySelector ? card.querySelector('select[name="region_timetable_display_mode_' + regionId + '"]') : null;
     var timetableMaxItemsInput = card && card.querySelector ? card.querySelector('input[name="region_timetable_max_items_' + regionId + '"]') : null;
     var groupId = timetableGroupInput ? timetableGroupInput.value : (current.timetable_group_id === undefined || current.timetable_group_id === null || current.timetable_group_id === '' ? '' : Number(current.timetable_group_id));
-    var displayMode = timetableDisplayModeInput ? timetableDisplayModeInput.value : String(current.display_mode || 'upcoming').trim().toLowerCase() || 'upcoming';
+    var displayMode = timetableDisplayModeInput ? timetableDisplayModeInput.value : String(current.display_mode || current.timetable_display_mode || 'upcoming').trim().toLowerCase() || 'upcoming';
-    var maxItems = Math.max(1, Number(timetableMaxItemsInput ? timetableMaxItemsInput.value : current.max_items || 5));
+    var maxItems = Math.max(1, Number(timetableMaxItemsInput ? timetableMaxItemsInput.value : current.max_items || current.timetable_max_items || 5));
     var group = getGroupById(groupId, timetableGroups);
     var entries = getVisibleEntries(groupId, displayMode, maxItems, timetableGroups);
     if (!entries.length) {
@@ -169,10 +248,10 @@
     var region = context.region;
     var current = context.current || {};
     var timetableGroups = Array.isArray(context.timetableGroups) ? context.timetableGroups : [];
-    var currentValue = String(current.value !== undefined ? current.value : current.text !== undefined ? current.text : '');
+    var currentValue = String(current.text !== undefined ? current.text : current.value !== undefined ? current.value : '');
     var currentGroupId = current.timetable_group_id === undefined || current.timetable_group_id === null || current.timetable_group_id === '' ? '' : Number(current.timetable_group_id);
-    var currentDisplayMode = String(current.display_mode || 'upcoming').trim().toLowerCase() || 'upcoming';
+    var currentDisplayMode = String(current.display_mode || current.timetable_display_mode || 'upcoming').trim().toLowerCase() || 'upcoming';
-    var currentMaxItems = Math.max(1, Number(current.max_items || 5));
+    var currentMaxItems = Math.max(1, Number(current.max_items || current.timetable_max_items || 5));
     var currentGroup = getGroupById(currentGroupId, timetableGroups);
     var currentEntries = getVisibleEntries(currentGroupId, currentDisplayMode, currentMaxItems, timetableGroups);
     if (!currentEntries.length) {
@@ -219,7 +298,12 @@
           '<div class="api-region-placeholder-section schedule-placeholder-section" data-schedule-placeholder-chips>' +
             '<div class="api-region-placeholder-title">Available placeholders</div>' +
             '<div class="d-flex flex-wrap gap-2">' + renderSchedulePlaceholderChips(currentGroup, currentEntries) + '</div>' +
-            '<div class="text-body-secondary small mt-1">Placeholder values support transforms, for example <code>{{title.upper()}}</code>, <code>{{title.title()}}</code>, <code>{{title.lower()}}</code> or <code>{{start.format("MMM D, YYYY h:mm A")}}</code>.</div>' +
+            '<div class="text-body-secondary small mt-1">Placeholder values support transforms, for example <code>{{title.upper()}}</code>, <code>{{title.title()}}</code>, <code>{{title.lower()}}</code>, <code>{{start.format("MMM D, YYYY h:mm A")}}</code>, <code>{{start.tz()}}</code> or <code>{{start.tz_short()}}</code>.</div>' +
+            '<details class="mt-2">' +
+              '<summary class="small text-body-secondary">Supported date format tokens</summary>' +
+              '<div class="mt-2">' + renderScheduleFormatTokenTable() + '</div>' +
+              '<div class="text-body-secondary small mt-1">Use these tokens inside <code>.format(...)</code>; for example <code>{{start.format("MMM D, YYYY h:mm A")}}</code>.</div>' +
+            '</details>' +
           '</div>' +
           '</div>' +
         '</div>' +
@@ -287,13 +371,29 @@
     var textAreaInput = card && card.querySelector ? card.querySelector('textarea.editor-source') : null;
     var hiddenInput = card && card.querySelector ? card.querySelector('input[type="hidden"][name="region_text_' + region.id + '"]') : null;
     var editor = window.tinymce && typeof window.tinymce.get === 'function' ? window.tinymce.get('slide-editor-region-' + region.id) : null;
-    var value = String(editor ? editor.getContent({ format: 'html' }) : (hiddenInput && hiddenInput.value !== undefined ? hiddenInput.value : (textAreaInput && textAreaInput.value !== undefined ? textAreaInput.value : current.value)));
+    var fallbackValue = hiddenInput && hiddenInput.value !== undefined ? hiddenInput.value : (textAreaInput && textAreaInput.value !== undefined ? textAreaInput.value : current.value);
+    var currentGroup = getGroupById(timetableGroupInput ? timetableGroupInput.value : current.timetable_group_id, timetableGroups);
+    var timezoneValues = getTimezoneValues(currentGroup);
+    var value = String((function () {
+      if (!editor || typeof editor.getContent !== 'function') {
+        return fallbackValue;
+      }
+
+      try {
+        return editor.getContent({ format: 'html' });
+      } catch (_error) {
+        return fallbackValue;
+      }
+    }()));
 
     return {
       value: value,
       style: getTextStyle(region, current),
       timetable_group_id: timetableGroupInput ? timetableGroupInput.value || current.timetable_group_id : current.timetable_group_id,
       display_mode: timetableDisplayModeInput ? timetableDisplayModeInput.value || current.display_mode : current.display_mode,
+      tz: timezoneValues.tz,
+      tz_short: timezoneValues.tz_short,
+      timeZone: timezoneValues.tz,
       max_items: timetableMaxItemsInput ? timetableMaxItemsInput.value || current.max_items : current.max_items,
       existingContent: existingContent || {},
       timetableGroups: Array.isArray(timetableGroups) ? timetableGroups : []
@@ -303,7 +403,7 @@
   function renderPreview(region, regionContent, context) {
     var groups = context && context.timetableGroups ? context.timetableGroups : [];
     var style = regionContent && regionContent.style ? regionContent.style : getTextStyle(region, regionContent || {});
-    var value = String(regionContent && (regionContent.value !== undefined ? regionContent.value : regionContent.text !== undefined ? regionContent.text : '') || '').trim();
+    var value = String(regionContent && (regionContent.text !== undefined ? regionContent.text : regionContent.value !== undefined ? regionContent.value : '') || '').trim();
     var groupId = regionContent && regionContent.timetable_group_id !== undefined ? regionContent.timetable_group_id : '';
     var displayMode = regionContent && regionContent.display_mode ? regionContent.display_mode : 'upcoming';
     var maxItems = regionContent && regionContent.max_items !== undefined ? regionContent.max_items : 5;
@@ -315,9 +415,14 @@
     }
 
       return '<div class="slide-preview-region timetable" style="width:100%;height:100%;overflow:hidden;' + (style.font_family ? 'font-family:' + escapeHtml(style.font_family) + ';' : '') + (style.font_size ? 'font-size:' + Math.max(1, Math.round(Number(style.font_size))) + 'px;' : '') + (style.font_color ? 'color:' + escapeHtml(style.font_color) + ';' : '') + '">' + entries.map(function (entry, index) {
+      var entryDate = entry && (entry.start_datetime || entry.end_datetime || entry.date || entry.time || '');
+      var timezoneValues = getTimezoneValues(group, entryDate);
       return '<div class="timetable-region-entry" data-timetable-entry-index="' + index + '">' + sanitizeRichText(renderTemplate(value, Object.assign({}, entry || {}, {
         start: entry && entry.start_datetime !== undefined ? entry.start_datetime : '',
         end: entry && entry.end_datetime !== undefined ? entry.end_datetime : '',
+        tz: timezoneValues.tz,
+        tz_short: timezoneValues.tz_short,
+        timeZone: timezoneValues.tz,
         group: group || {},
         entries: entries,
         index: index + 1

src/web/public/js/regions/type/text.js

@@ -84,7 +84,17 @@
     } : {};
 
     return {
-      value: String(editor ? editor.getContent({ format: 'html' }) : (hidden && hidden.value !== undefined ? hidden.value : (textarea && textarea.value !== undefined ? textarea.value : (current && current.value !== undefined ? current.value : '')))),
+      value: String((function () {
+        var fallback = hidden && hidden.value !== undefined ? hidden.value : (textarea && textarea.value !== undefined ? textarea.value : (current && current.value !== undefined ? current.value : ''));
+        if (!editor || typeof editor.getContent !== 'function') {
+          return fallback;
+        }
+        try {
+          return editor.getContent({ format: 'html' });
+        } catch (_error) {
+          return fallback;
+        }
+      }())),
       style: style,
       existingContent: existingContent || {}
     };

src/web/public/js/regions/type/time-date.js

@@ -166,9 +166,9 @@
     };
   }
 
-  function resolveTimeDatePlaceholder(values, expression) {
+  function resolveTimeDatePlaceholder(values, expression, options) {
     if (typeof placeholderUtils.resolvePlaceholderExpression === 'function' && typeof placeholderUtils.formatPlaceholderValue === 'function') {
-      return placeholderUtils.formatPlaceholderValue(placeholderUtils.resolvePlaceholderExpression(values, expression));
+      return placeholderUtils.formatPlaceholderValue(placeholderUtils.resolvePlaceholderExpression(values, expression, options || {}));
     }
 
     var parsed = String(expression || '').trim();
@@ -220,7 +220,7 @@
     var template = String(format || '').trim();
     var values = getFormattedParts(timeZone, date);
     return template.replace(/\{\{\s*([a-zA-Z0-9_.()\-]+)\s*\}\}/g, function (_match, key) {
-      return String(resolveTimeDatePlaceholder(values, key) || '');
+      return String(resolveTimeDatePlaceholder(values, key, { timeZone: timeZone }) || '');
     });
   }
 

src/web/public/js/shared/placeholder-utils.js

@@ -75,36 +75,148 @@
     return text;
   }
 
-  function formatDateValue(value, pattern) {
+  function getDefaultTimeZone() {
-    var date = value instanceof Date ? value : new Date(value);
+    try {
+      return Intl.DateTimeFormat().resolvedOptions().timeZone || 'UTC';
+    } catch (_error) {
+      return 'UTC';
+    }
+  }
+
+  function getDateValue(value) {
+    return value instanceof Date ? value : new Date(value);
+  }
+
+  function resolveTimeZone(value) {
+    var raw = String(value || '').trim();
+    if (!raw) {
+      return getDefaultTimeZone();
+    }
+
+    try {
+      new Intl.DateTimeFormat('en-GB', { timeZone: raw }).format(new Date());
+      return raw;
+    } catch (_error) {
+      return getDefaultTimeZone();
+    }
+  }
+
+  function getDatePartsFromLocalTime(date) {
+    var dayPeriod = date.getHours() >= 12 ? 'PM' : 'AM';
+    return {
+      year: String(date.getFullYear()),
+      month: padNumber(date.getMonth() + 1, 2),
+      day: padNumber(date.getDate(), 2),
+      hour24: padNumber(date.getHours(), 2),
+      hour12: padNumber(date.getHours() % 12 || 12, 2),
+      minute: padNumber(date.getMinutes(), 2),
+      second: padNumber(date.getSeconds(), 2),
+      weekdayLong: dayNamesLong[date.getDay()],
+      weekdayShort: dayNamesShort[date.getDay()],
+      monthLong: monthNamesLong[date.getMonth()],
+      monthShort: monthNamesShort[date.getMonth()],
+      dayPeriod: dayPeriod
+    };
+  }
+
+  function getDatePartsFromTimeZone(date, timeZone) {
+    var resolvedTimeZone = resolveTimeZone(timeZone);
+    var baseFormatter = new Intl.DateTimeFormat('en-GB', {
+      timeZone: resolvedTimeZone,
+      hour12: false,
+      hour: '2-digit',
+      minute: '2-digit',
+      second: '2-digit',
+      day: '2-digit',
+      month: '2-digit',
+      year: 'numeric'
+    });
+    var weekdayLongFormatter = new Intl.DateTimeFormat('en-GB', {
+      timeZone: resolvedTimeZone,
+      weekday: 'long'
+    });
+    var weekdayShortFormatter = new Intl.DateTimeFormat('en-GB', {
+      timeZone: resolvedTimeZone,
+      weekday: 'short'
+    });
+    var monthLongFormatter = new Intl.DateTimeFormat('en-GB', {
+      timeZone: resolvedTimeZone,
+      month: 'long'
+    });
+    var monthShortFormatter = new Intl.DateTimeFormat('en-GB', {
+      timeZone: resolvedTimeZone,
+      month: 'short'
+    });
+    var ampmFormatter = new Intl.DateTimeFormat('en-GB', {
+      timeZone: resolvedTimeZone,
+      hour12: true,
+      hour: '2-digit',
+      minute: '2-digit'
+    });
+    var numericParts = baseFormatter.formatToParts(date);
+    var weekdayLong = weekdayLongFormatter.formatToParts(date);
+    var weekdayShort = weekdayShortFormatter.formatToParts(date);
+    var monthLong = monthLongFormatter.formatToParts(date);
+    var monthShort = monthShortFormatter.formatToParts(date);
+    var ampm = ampmFormatter.formatToParts(date);
+
+    function getPart(parts, type) {
+      var match = parts.find(function (part) {
+        return part && part.type === type;
+      });
+      return match ? String(match.value || '') : '';
+    }
+
+    var dayPeriod = getPart(ampm, 'dayPeriod');
+
+    return {
+      year: getPart(numericParts, 'year'),
+      month: getPart(numericParts, 'month'),
+      day: getPart(numericParts, 'day'),
+      hour24: getPart(numericParts, 'hour'),
+      hour12: getPart(ampm, 'hour'),
+      minute: getPart(numericParts, 'minute'),
+      second: getPart(numericParts, 'second'),
+      weekdayLong: getPart(weekdayLong, 'weekday'),
+      weekdayShort: getPart(weekdayShort, 'weekday'),
+      monthLong: getPart(monthLong, 'month'),
+      monthShort: getPart(monthShort, 'month'),
+      dayPeriod: String(dayPeriod || '').toUpperCase(),
+      timeZone: resolvedTimeZone
+    };
+  }
+
+  function formatDateValue(value, pattern, timeZone) {
+    var date = getDateValue(value);
     if (Number.isNaN(date.getTime())) {
       return '';
     }
 
     var format = String(pattern || 'YYYY-MM-DD HH:mm').trim() || 'YYYY-MM-DD HH:mm';
-    var hours24 = date.getHours();
+    var parts = timeZone ? getDatePartsFromTimeZone(date, timeZone) : getDatePartsFromLocalTime(date);
-    var hours12 = hours24 % 12 || 12;
+    var hours24 = parts.hour24;
+    var hours12 = parts.hour12;
     var tokenMap = {
-      YYYY: String(date.getFullYear()),
+      YYYY: parts.year,
-      YY: String(date.getFullYear()).slice(-2),
+      YY: parts.year.slice(-2),
-      MMMM: monthNamesLong[date.getMonth()],
+      MMMM: parts.monthLong,
-      MMM: monthNamesShort[date.getMonth()],
+      MMM: parts.monthShort,
-      MM: padNumber(date.getMonth() + 1, 2),
+      MM: parts.month,
-      M: String(date.getMonth() + 1),
+      M: String(Number(parts.month) || 0),
-      DD: padNumber(date.getDate(), 2),
+      DD: parts.day,
-      D: String(date.getDate()),
+      D: String(Number(parts.day) || 0),
-      dddd: dayNamesLong[date.getDay()],
+      dddd: parts.weekdayLong,
-      ddd: dayNamesShort[date.getDay()],
+      ddd: parts.weekdayShort,
-      HH: padNumber(hours24, 2),
+      HH: hours24,
-      H: String(hours24),
+      H: String(Number(hours24) || 0),
-      hh: padNumber(hours12, 2),
+      hh: hours12,
-      h: String(hours12),
+      h: String(Number(hours12) || 0),
-      mm: padNumber(date.getMinutes(), 2),
+      mm: parts.minute,
-      m: String(date.getMinutes()),
+      m: String(Number(parts.minute) || 0),
-      ss: padNumber(date.getSeconds(), 2),
+      ss: parts.second,
-      s: String(date.getSeconds()),
+      s: String(Number(parts.second) || 0),
-      A: hours24 >= 12 ? 'PM' : 'AM',
+      A: parts.dayPeriod,
-      a: hours24 >= 12 ? 'pm' : 'am'
+      a: String(parts.dayPeriod || '').toLowerCase()
     };
 
     return format.replace(/\[([^\]]+)\]|YYYY|YY|MMMM|MMM|MM|M|DD|D|dddd|ddd|HH|H|hh|h|mm|m|ss|s|A|a/g, function (match, literal) {
@@ -112,7 +224,32 @@
     });
   }
 
-  function applyTransform(value, transform) {
+  function getTimeZoneShortName(value, timeZone) {
+    var date = getDateValue(value);
+    if (Number.isNaN(date.getTime())) {
+      return '';
+    }
+
+    var resolvedTimeZone = resolveTimeZone(timeZone);
+    try {
+      var parts = new Intl.DateTimeFormat('en-GB', {
+        timeZone: resolvedTimeZone,
+        timeZoneName: 'short'
+      }).formatToParts(date);
+      var match = parts.find(function (part) {
+        return part && part.type === 'timeZoneName';
+      });
+      return match ? String(match.value || '') : resolvedTimeZone;
+    } catch (_error) {
+      return resolvedTimeZone;
+    }
+  }
+
+  function getTransformTimeZone(args, options) {
+    return resolveTimeZone((args && args[0]) || (options && options.timeZone) || '');
+  }
+
+  function applyTransform(value, transform, options) {
     var text = String(value === undefined || value === null ? '' : value);
     var name = String(transform && transform.name || '').trim().toLowerCase();
     var args = Array.isArray(transform && transform.args) ? transform.args : [];
@@ -132,18 +269,26 @@
     }
 
     if (name === 'format' || name === 'date' || name === 'datetime' || name === 'time') {
-      return formatDateValue(value, args[0] || (name === 'time' ? 'h:mm A' : name === 'date' ? 'MMM D, YYYY' : 'MMM D, YYYY h:mm A'));
+      return formatDateValue(value, args[0] || (name === 'time' ? 'h:mm A' : name === 'date' ? 'MMM D, YYYY' : 'MMM D, YYYY h:mm A'), getTransformTimeZone(args.slice(1), options));
+    }
+
+    if (name === 'tz') {
+      return getTransformTimeZone(args, options);
+    }
+
+    if (name === 'tz_short') {
+      return getTimeZoneShortName(value, getTransformTimeZone(args, options));
     }
 
     return text;
   }
 
-  function resolvePlaceholderExpression(value, expression) {
+  function resolvePlaceholderExpression(value, expression, options) {
     var parsed = parsePlaceholderExpression(expression);
     var resolved = resolvePath(value, parsed.path);
 
     parsed.transforms.forEach(function (transform) {
-      resolved = applyTransform(resolved, transform);
+      resolved = applyTransform(resolved, transform, options || {});
     });
 
     return resolved;

src/web/public/js/shared/time-date-placeholders.js

@@ -2,47 +2,79 @@
 
 (function () {
   var root = window;
-  var PLACEHOLDERS = [
+  var FORMAT_PLACEHOLDERS = [
-    { token: 'h', label: 'h' },
+    { token: 'h', output: '1-12', description: 'The hour, 12-hour clock' },
-    { token: 'hh', label: 'hh' },
+    { token: 'hh', output: '01-12', description: 'The hour, 12-hour clock, 2-digits' },
-    { token: 'm', label: 'm' },
+    { token: 'm', output: '0-59', description: 'The minute' },
-    { token: 'mm', label: 'mm' },
+    { token: 'mm', output: '00-59', description: 'The minute, 2-digits' },
-    { token: 's', label: 's' },
+    { token: 's', output: '0-59', description: 'The second' },
-    { token: 'ss', label: 'ss' },
+    { token: 'ss', output: '00-59', description: 'The second, 2-digits' },
-    { token: 'd', label: 'd' },
+    { token: 'A', output: 'AM/PM', description: 'Uppercase day period' },
-    { token: 'dd', label: 'dd' },
+    { token: 'a', output: 'am/pm', description: 'Lowercase day period' },
-    { token: 'M', label: 'M' },
+    { token: 'D', output: '1-31', description: 'The day of the month' },
-    { token: 'MM', label: 'MM' },
+    { token: 'DD', output: '01-31', description: 'The day of the month, 2-digits' },
-    { token: 'y', label: 'y' },
+    { token: 'ddd', output: 'Mon', description: 'The abbreviated weekday name' },
-    { token: 'yyyy', label: 'yyyy' },
+    { token: 'dddd', output: 'Monday', description: 'The full weekday name' },
-    { token: 'yy', label: 'yy' },
+    { token: 'M', output: '1-12', description: 'The month, beginning at 1' },
-    { token: 'ddd', label: 'ddd' },
+    { token: 'MM', output: '01-12', description: 'The month, 2-digits' },
-    { token: 'dddd', label: 'dddd' },
+    { token: 'MMM', output: 'Jan-Dec', description: 'The abbreviated month name' },
-    { token: 'MMM', label: 'MMM' },
+    { token: 'MMMM', output: 'January-December', description: 'The full month name' },
-    { token: 'MMMM', label: 'MMMM' },
+    { token: 'YY', output: '18', description: 'The two-digit year' },
-    { token: 'a', label: 'a' },
+    { token: 'YYYY', output: '2018', description: 'The four-digit year' }
-    { token: 'tz', label: 'tz' },
-    { token: 'tz_short', label: 'tz_short' }
   ];
 
+  var HELPER_PLACEHOLDERS = [
+    { token: 'tz', output: 'Europe/London', description: 'The resolved time zone name' },
+    { token: 'tz_short', output: 'BST/GMT', description: 'The time zone abbreviation for the selected date' }
+  ];
+
+  var PLACEHOLDERS = FORMAT_PLACEHOLDERS.concat(HELPER_PLACEHOLDERS);
+
   function getTokens() {
     return PLACEHOLDERS.slice();
   }
 
-  function renderChips() {
+  function getFormatTokens() {
-    if (root.placeholderChips && typeof root.placeholderChips.renderChips === 'function') {
+    return FORMAT_PLACEHOLDERS.slice();
-      return root.placeholderChips.renderChips(PLACEHOLDERS.map(function (item) {
-        return item.token;
-      }));
   }
 
-    return PLACEHOLDERS.map(function (item) {
+  function renderTable() {
-      return '<span class="chip">{{' + item.token + '}}</span>';
+    return '' +
-    }).join('');
+      '<div class="table-responsive">' +
+        '<table class="table table-sm align-middle mb-0">' +
+          '<thead>' +
+            '<tr>' +
+              '<th scope="col">Format</th>' +
+              '<th scope="col">Output</th>' +
+              '<th scope="col">Description</th>' +
+            '</tr>' +
+          '</thead>' +
+          '<tbody>' +
+            FORMAT_PLACEHOLDERS.map(function (item) {
+              return '' +
+                '<tr>' +
+                  '<td><code>' + item.token + '</code></td>' +
+                  '<td>' + escapeHtml(item.output || '') + '</td>' +
+                  '<td>' + escapeHtml(item.description || '') + '</td>' +
+                '</tr>';
+            }).join('') +
+          '</tbody>' +
+        '</table>' +
+      '</div>';
+  }
+
+  function escapeHtml(value) {
+    return String(value === undefined || value === null ? '' : value)
+      .replace(/&/g, '&amp;')
+      .replace(/</g, '&lt;')
+      .replace(/>/g, '&gt;')
+      .replace(/"/g, '&quot;')
+      .replace(/'/g, '&#39;');
   }
 
   root.timeDatePlaceholders = {
     getTokens: getTokens,
-    renderChips: renderChips
+    getFormatTokens: getFormatTokens,
+    renderTable: renderTable
   };
 }());

src/web/public/js/slides/slide-form-editor.js

@@ -72,6 +72,18 @@ export function createSlideFormEditorController(options) {
     return window.tinymce || null;
   }
 
+  function getEditorContentSafely(editor, fallbackValue) {
+    if (!editor || typeof editor.getContent !== 'function') {
+      return String(fallbackValue || '');
+    }
+
+    try {
+      return String(editor.getContent({ format: 'html' }));
+    } catch (_error) {
+      return String(fallbackValue || '');
+    }
+  }
+
   function getThemeName() {
     var theme = String(document.documentElement && document.documentElement.dataset && document.documentElement.dataset.bsTheme || 'light').trim().toLowerCase();
     if (theme === 'auto') {
@@ -95,14 +107,19 @@ export function createSlideFormEditorController(options) {
   }
 
   function syncEditorState(regionId, editor, shouldLock, hydrated) {
+    var hidden = getEditorHiddenInput(regionId);
+    var sourceElm = editor && editor.targetElm ? editor.targetElm : null;
+    var fallbackContent = hidden && hidden.value !== undefined ? hidden.value : (sourceElm && sourceElm.value !== undefined ? sourceElm.value : '');
+
     if (editor && typeof editor.save === 'function') {
+      if (typeof editor.blur === 'function') {
+        editor.blur();
+      }
       editor.save();
     }
 
-    var content = editor.getContent({ format: 'html' });
+    var content = sourceElm && sourceElm.value !== undefined ? String(sourceElm.value || '') : getEditorContentSafely(editor, fallbackContent);
     content = isEmptyRichTextValue(content) ? '' : content;
-    var hidden = getEditorHiddenInput(regionId);
-    var sourceElm = editor && editor.targetElm ? editor.targetElm : null;
 
     if (hidden) {
       hidden.value = content;
@@ -211,7 +228,7 @@ export function createSlideFormEditorController(options) {
     }
 
     editor.on('init', function () {
-      var content = editor.getContent({ format: 'html' });
+      var content = getEditorContentSafely(editor, hidden && hidden.value !== undefined ? hidden.value : (source && source.value !== undefined ? source.value : ''));
       content = isEmptyRichTextValue(content) ? '' : content;
       if (hidden) {
         hidden.value = content;
@@ -405,14 +422,12 @@ export function createSlideFormEditorController(options) {
     var saves = Array.prototype.map.call(templateFields.querySelectorAll('.editor-holder'), function (holder) {
       var regionId = holder.getAttribute('data-region-id');
       var editor = editorInstances.get(regionId);
-      var hidden = getEditorHiddenInput(regionId);
 
-      if (!editor || !hidden) {
+      if (!editor) {
         return Promise.resolve();
       }
 
-      hidden.value = editor.getContent({ format: 'html' });
+      syncEditorState(regionId, editor, false, true);
-      syncEditorFontSizeHidden(regionId);
       return Promise.resolve();
     });
 

src/web/public/js/slides/slide-form.js

@@ -840,6 +840,14 @@ import { createSlideFormPreviewHelpers } from '/assets/js/slides/slide-form-prev
           throw new Error('Wait for the image upload to finish before saving.');
         }
         await slideFormEditorController.syncEditors();
+        await new Promise(function (resolve) {
+          window.requestAnimationFrame(function () {
+            resolve();
+          });
+        });
+        await new Promise(function (resolve) {
+          window.setTimeout(resolve, 0);
+        });
         await syncRegionCards();
       },
       fallbackSuccessMessage: 'Saved slide.',

src/web/routes/data-sources/timetables/duplicate.js

@@ -9,7 +9,8 @@ function buildDuplicateTimetableGroup(timetableGroup, duplicateName) {
   return Object.assign({}, timetableGroup, {
     id: null,
     name: duplicateName,
-    shortDescription: timetableGroup.short_description || ''
+    shortDescription: timetableGroup.short_description || '',
+    timezone: timetableGroup.timezone || 'UTC'
   });
 }
 

src/web/routes/data-sources/timetables/form-view-model.js

@@ -1,14 +1,40 @@
 // Shared timetable group form view-model builder.
 
+const { normalizeTimeZone } = require('../../../../data/timetables');
+
+const COMMON_TIME_ZONES = [
+  'UTC',
+  'Europe/London',
+  'Europe/Dublin',
+  'Europe/Paris',
+  'Europe/Berlin',
+  'Europe/Madrid',
+  'America/New_York',
+  'America/Chicago',
+  'America/Denver',
+  'America/Los_Angeles',
+  'America/Toronto',
+  'America/Vancouver',
+  'America/Sao_Paulo',
+  'Asia/Dubai',
+  'Asia/Kolkata',
+  'Asia/Singapore',
+  'Asia/Tokyo',
+  'Asia/Seoul',
+  'Australia/Sydney',
+  'Pacific/Auckland'
+];
+
 function buildDefaultTimetableGroup() {
   return {
     id: null,
     name: '',
-    shortDescription: ''
+    shortDescription: '',
+    timezone: 'Europe/London'
   };
 }
 
-function formatDateTimeLocalValue(value) {
+function formatDateTimeLocalValue(value, timeZone) {
   if (!value) {
     return '';
   }
@@ -18,22 +44,49 @@ function formatDateTimeLocalValue(value) {
     return '';
   }
 
-  const year = String(date.getFullYear()).padStart(4, '0');
+  const resolvedTimeZone = normalizeTimeZone(timeZone, 'Europe/London');
-  const month = String(date.getMonth() + 1).padStart(2, '0');
+  const parts = new Intl.DateTimeFormat('en-GB', {
-  const day = String(date.getDate()).padStart(2, '0');
+    timeZone: resolvedTimeZone,
-  const hours = String(date.getHours()).padStart(2, '0');
+    hour12: false,
-  const minutes = String(date.getMinutes()).padStart(2, '0');
+    year: 'numeric',
-  return `${year}-${month}-${day}T${hours}:${minutes}`;
+    month: '2-digit',
+    day: '2-digit',
+    hour: '2-digit',
+    minute: '2-digit',
+    second: '2-digit'
+  }).formatToParts(date).reduce(function (acc, part) {
+    if (part && part.type && part.type !== 'literal') {
+      acc[part.type] = part.value;
+    }
+    return acc;
+  }, Object.create(null));
+
+  if (!parts.year || !parts.month || !parts.day || !parts.hour || !parts.minute) {
+    return '';
+  }
+
+  return [
+    String(parts.year).padStart(4, '0'),
+    '-',
+    String(parts.month).padStart(2, '0'),
+    '-',
+    String(parts.day).padStart(2, '0'),
+    'T',
+    String(parts.hour).padStart(2, '0'),
+    ':',
+    String(parts.minute).padStart(2, '0')
+  ].join('');
 }
 
 function buildTimetableGroupFormViewModel(timetableGroup, timetableEntries, message, currentUser, isEdit, options) {
   const viewTimetableGroup = Object.assign(buildDefaultTimetableGroup(), timetableGroup || {});
+  viewTimetableGroup.timezone = normalizeTimeZone(viewTimetableGroup.timezone, 'Europe/London');
   const viewOptions = options || {};
   const viewTimetableEntries = Array.isArray(timetableEntries) && timetableEntries.length
     ? timetableEntries.map(function (entry) {
         return Object.assign({}, entry, {
-          startValue: formatDateTimeLocalValue(entry.start_datetime),
+          startValue: formatDateTimeLocalValue(entry.start_datetime, viewTimetableGroup.timezone),
-          endValue: formatDateTimeLocalValue(entry.end_datetime)
+          endValue: formatDateTimeLocalValue(entry.end_datetime, viewTimetableGroup.timezone)
         });
       })
     : [{ id: null, title: '', short_description: '', startValue: '', endValue: '', sort_order: 0 }];
@@ -46,6 +99,7 @@ function buildTimetableGroupFormViewModel(timetableGroup, timetableEntries, mess
     messageVariant: viewOptions.messageVariant || '',
     isEdit: Boolean(isEdit),
     timetableGroup: viewTimetableGroup,
+    timeZoneOptions: COMMON_TIME_ZONES,
     timetableEntries: viewTimetableEntries,
     inUse: Boolean(viewTimetableGroup.inUse),
     showSaveSecondaryActions: true,

src/web/routes/data-sources/timetables/list.js

@@ -1,22 +1,45 @@
 // Timetable group list page renderer.
 
 const { renderView } = require('../../../view');
+const { normalizeTimeZone } = require('../../../../data/timetables');
 
-function formatNextStartLabel(value, formatDashboardDate) {
+function formatDateInTimeZone(value, timeZone) {
+  if (!value) {
+    return '';
+  }
+
+  const date = new Date(value);
+  if (Number.isNaN(date.getTime())) {
+    return '';
+  }
+
+  const resolvedTimeZone = normalizeTimeZone(timeZone, 'Europe/London');
+  return new Intl.DateTimeFormat('en-US', {
+    timeZone: resolvedTimeZone,
+    month: 'short',
+    day: '2-digit',
+    year: 'numeric',
+    hour: 'numeric',
+    minute: '2-digit',
+    second: '2-digit'
+  }).format(date);
+}
+
+function formatNextStartLabel(value, timeZone) {
   if (!value) {
     return 'No entries';
   }
 
-  const label = typeof formatDashboardDate === 'function'
+  const label = formatDateInTimeZone(value, timeZone) || String(value);
-    ? formatDashboardDate(value)
-    : String(value);
   return label || 'No entries';
 }
 
-module.exports = function renderTimetableGroupsPage(data, message, currentUser, formatDashboardDate) {
+module.exports = function renderTimetableGroupsPage(data, message, currentUser) {
   const timetableGroups = (data.timetableGroups || []).map(function (timetableGroup) {
+    const timeZone = normalizeTimeZone(timetableGroup.timezone, 'Europe/London');
     return Object.assign({}, timetableGroup, {
-      nextStartLabel: formatNextStartLabel(timetableGroup.next_start_datetime, formatDashboardDate),
+      timeZone: timeZone,
+      nextStartLabel: formatNextStartLabel(timetableGroup.next_start_datetime, timeZone),
       nextStartValue: timetableGroup.next_start_datetime ? new Date(timetableGroup.next_start_datetime).toISOString() : ''
     });
   });

src/web/routes/data-sources/timetables/routes.js

@@ -42,7 +42,7 @@ async function getDataSourceUsageMaps(pool, common) {
   return timetableGroupIds;
 }
 
-function readScheduleArrayFieldValue(body, keys) {
+function readTimetableArrayFieldValue(body, keys) {
   const searchKeys = Array.isArray(keys) ? keys : [keys];
   for (let index = 0; index < searchKeys.length; index += 1) {
     const key = searchKeys[index];
@@ -57,17 +57,17 @@ function readScheduleArrayFieldValue(body, keys) {
   return [];
 }
 
-function buildScheduleEntryRows(req, parseDateTimeLocal) {
+function buildTimetableEntryRows(req, parseDateTimeLocal) {
   const body = req.body || {};
-  const ids = readScheduleArrayFieldValue(body, ['entry_id[]', 'entry_id']);
+  const ids = readTimetableArrayFieldValue(body, ['entry_id[]', 'entry_id']);
-  const titles = readScheduleArrayFieldValue(body, ['entry_title[]', 'entry_title']);
+  const titles = readTimetableArrayFieldValue(body, ['entry_title[]', 'entry_title']);
-  const descriptions = readScheduleArrayFieldValue(body, ['entry_short_description[]', 'entry_short_description']);
+  const descriptions = readTimetableArrayFieldValue(body, ['entry_short_description[]', 'entry_short_description']);
-  const starts = readScheduleArrayFieldValue(body, ['entry_start_datetime[]', 'entry_start_datetime']);
+  const starts = readTimetableArrayFieldValue(body, ['entry_start_datetime[]', 'entry_start_datetime']);
-  const ends = readScheduleArrayFieldValue(body, ['entry_end_datetime[]', 'entry_end_datetime']);
+  const ends = readTimetableArrayFieldValue(body, ['entry_end_datetime[]', 'entry_end_datetime']);
 
   const lengths = [ids.length, titles.length, descriptions.length, starts.length, ends.length].filter(Boolean);
   if (lengths.length && lengths.some(function (value) { return value !== lengths[0]; })) {
-    const error = new Error('Schedule entry data is invalid.');
+    const error = new Error('Timetable entry data is invalid.');
     error.statusCode = 400;
     throw error;
   }
@@ -86,19 +86,19 @@ function buildScheduleEntryRows(req, parseDateTimeLocal) {
     }
 
     if (!title) {
-      const error = new Error('Each schedule entry requires a title.');
+      const error = new Error('Each timetable entry requires a title.');
       error.statusCode = 400;
       throw error;
     }
 
     if (!startDatetime) {
-      const error = new Error('Each schedule entry requires a start datetime.');
+      const error = new Error('Each timetable entry requires a start datetime.');
       error.statusCode = 400;
       throw error;
     }
 
     if (endDatetime && endDatetime < startDatetime) {
-      const error = new Error('Schedule entry end datetime must be after the start datetime.');
+      const error = new Error('Timetable entry end datetime must be after the start datetime.');
       error.statusCode = 400;
       throw error;
     }
@@ -191,7 +191,7 @@ module.exports = function registerTimetableRoutes(app, deps) {
 
       let duplicateName = buildDuplicateTimetableGroupName(timetableGroup.name);
       let duplicateIndex = 2;
-      while (await common.fetchDuplicateName(pool, 'i_schedule_groups', duplicateName)) {
+      while (await common.fetchDuplicateName(pool, 'i_timetable_groups', duplicateName)) {
         duplicateName = buildDuplicateTimetableGroupName(timetableGroup.name) + ' (' + duplicateIndex + ')';
         duplicateIndex += 1;
       }
@@ -207,16 +207,16 @@ module.exports = function registerTimetableRoutes(app, deps) {
     const connection = await pool.getConnection();
     try {
       const payload = common.buildTimetableGroupPayload(req, null);
-      if (await common.fetchDuplicateName(pool, 'i_schedule_groups', payload.name)) {
+      if (await common.fetchDuplicateName(pool, 'i_timetable_groups', payload.name)) {
         return res.redirect('/data-sources/timetables/new?message=' + encodeURIComponent('A timetable group with that name already exists.'));
       }
 
-      const entryRows = buildScheduleEntryRows(req, parseDateTimeLocal);
+      const entryRows = buildTimetableEntryRows(req, parseDateTimeLocal);
       const actorId = getAuditUserId(req);
       await connection.beginTransaction();
       const [result] = await connection.query(
-        'INSERT INTO i_schedule_groups (name, short_description, created_by, modified_by) VALUES (?, ?, ?, ?)',
+        'INSERT INTO i_timetable_groups (name, short_description, timezone, created_by, modified_by) VALUES (?, ?, ?, ?, ?)',
-        [payload.name, payload.shortDescription || null, actorId, actorId]
+        [payload.name, payload.shortDescription || null, payload.timezone, actorId, actorId]
       );
 
       if (entryRows.length) {
@@ -233,7 +233,7 @@ module.exports = function registerTimetableRoutes(app, deps) {
         });
 
         await connection.query(
-          'INSERT INTO i_schedule_entries (schedule_group_id, title, short_description, start_datetime, end_datetime, created_by, modified_by) VALUES ?',
+          'INSERT INTO i_timetable_entries (schedule_group_id, title, short_description, start_datetime, end_datetime, created_by, modified_by) VALUES ?',
           [insertRows]
         );
       }
@@ -265,18 +265,18 @@ module.exports = function registerTimetableRoutes(app, deps) {
       }
 
       const payload = common.buildTimetableGroupPayload(req, timetableGroup);
-      if (await common.fetchDuplicateName(pool, 'i_schedule_groups', payload.name, timetableGroup.id)) {
+      if (await common.fetchDuplicateName(pool, 'i_timetable_groups', payload.name, timetableGroup.id)) {
         return res.redirect('/data-sources/timetables/' + timetableGroup.id + '/edit?message=' + encodeURIComponent('A timetable group with that name already exists.'));
       }
 
-      const entryRows = buildScheduleEntryRows(req, parseDateTimeLocal);
+      const entryRows = buildTimetableEntryRows(req, parseDateTimeLocal);
       const actorId = getAuditUserId(req);
       await connection.beginTransaction();
       await connection.query(
-        'UPDATE i_schedule_groups SET name = ?, short_description = ?, modified_by = ? WHERE id = ?',
+        'UPDATE i_timetable_groups SET name = ?, short_description = ?, timezone = ?, modified_by = ? WHERE id = ?',
-        [payload.name, payload.shortDescription || null, actorId, timetableGroup.id]
+        [payload.name, payload.shortDescription || null, payload.timezone, actorId, timetableGroup.id]
       );
-      await connection.query('DELETE FROM i_schedule_entries WHERE schedule_group_id = ?', [timetableGroup.id]);
+      await connection.query('DELETE FROM i_timetable_entries WHERE schedule_group_id = ?', [timetableGroup.id]);
 
       if (entryRows.length) {
         const insertRows = entryRows.map(function (entry) {
@@ -292,7 +292,7 @@ module.exports = function registerTimetableRoutes(app, deps) {
         });
 
         await connection.query(
-          'INSERT INTO i_schedule_entries (schedule_group_id, title, short_description, start_datetime, end_datetime, created_by, modified_by) VALUES ?',
+          'INSERT INTO i_timetable_entries (schedule_group_id, title, short_description, start_datetime, end_datetime, created_by, modified_by) VALUES ?',
           [insertRows]
         );
       }
@@ -330,7 +330,7 @@ module.exports = function registerTimetableRoutes(app, deps) {
       const connection = await pool.getConnection();
       try {
         await connection.beginTransaction();
-        await connection.query('DELETE FROM i_schedule_groups WHERE id = ?', [timetableGroup.id]);
+        await connection.query('DELETE FROM i_timetable_groups WHERE id = ?', [timetableGroup.id]);
         await connection.commit();
       } catch (error) {
         await connection.rollback();

src/web/views/data-sources/timetables/form.hbs

@@ -10,16 +10,30 @@
     <div class="card-header">
       <h3 class="card-title">Timetable group details</h3>
     </div>
-    <div class="card-body d-grid gap-4">
+    <div class="card-body d-grid gap-4 pb-0">
       <div class="row g-3">
         <div class="col-12 col-lg-4">
           <label for="timetable-group-name" class="form-label">Name</label>
           <input id="timetable-group-name" name="name" class="form-control" value="{{timetableGroup.name}}" maxlength="128" data-limit-text-length required />
         </div>
         <div class="col-12 col-lg-8">
+          <div class="row g-3">
+            <div class="col-12 col-lg-7">
               <label for="timetable-group-short-description" class="form-label">Short description</label>
               <input id="timetable-group-short-description" name="short_description" class="form-control" value="{{timetableGroup.shortDescription}}" maxlength="255" data-limit-text-length placeholder="Morning events" />
             </div>
+            <div class="col-12 col-lg-5">
+              <label for="timetable-group-timezone" class="form-label">Time zone</label>
+              <input id="timetable-group-timezone" name="timezone" class="form-control" value="{{timetableGroup.timezone}}" list="timetable-group-timezones" placeholder="Europe/Berlin" autocomplete="off" required />
+              <datalist id="timetable-group-timezones">
+                {{#each timeZoneOptions}}
+                  <option value="{{this}}"></option>
+                {{/each}}
+              </datalist>
+              <div class="form-text">Entries are stored and displayed using this IANA time zone.</div>
+            </div>
+          </div>
+        </div>
       </div>
     </div>
     <div class="card-footer d-flex justify-content-end">
@@ -32,9 +46,9 @@
       <h3 class="card-title mb-0 flex-grow-1">Entries</h3>
       <button type="button" class="btn btn-primary btn-sm ms-auto" data-add-timetable-entry>Add entry</button>
     </div>
-    <div class="card-body d-grid">
+    <div class="card-body p-0 timetable-entries-table-shell">
       <div class="table-responsive">
-        <table class="table table-bordered align-middle schedule-entries-table mb-0">
+        <table class="table table-bordered align-middle timetable-entries-table mb-0">
           <thead>
             <tr>
               <th style="width: 18rem;">Title</th>
@@ -59,10 +73,9 @@
                 </td>
                 <td>
                   <input type="datetime-local" name="entry_end_datetime[]" class="form-control" value="{{endValue}}" />
-                  <div class="invalid-feedback">End time must be at least 1 minute after the start time.</div>
                 </td>
                 <td>
-                  <button type="button" class="btn btn-outline-danger btn-sm" data-remove-timetable-entry>Remove</button>
+                  <button type="button" class="btn btn-danger btn-sm" data-remove-timetable-entry>Remove</button>
                 </td>
               </tr>
             {{/each}}
@@ -87,10 +100,9 @@
     </td>
     <td>
       <input type="datetime-local" name="entry_end_datetime[]" class="form-control" value="" />
-      <div class="invalid-feedback">End time must be at least 1 minute after the start time.</div>
     </td>
     <td>
-      <button type="button" class="btn btn-outline-danger btn-sm" data-remove-timetable-entry>Remove</button>
+      <button type="button" class="btn btn-danger btn-sm" data-remove-timetable-entry>Remove</button>
     </td>
   </tr>
 </template>

src/web/views/data-sources/timetables/list.hbs

@@ -24,6 +24,7 @@
         <tr>
           <th data-table-sort-key="name">Name</th>
           <th data-table-sort-key="description">Description</th>
+          <th data-table-sort-key="timezone">Time zone</th>
           <th data-table-sort-key="entries">Entries</th>
           <th data-table-sort-key="next_start">Next start</th>
           <th>Actions</th>
@@ -35,10 +36,11 @@
             <tr data-table-search-row>
               <td data-label="Name">{{name}}</td>
               <td data-label="Description" class="text-break">{{short_description}}</td>
+              <td data-label="Time zone">{{timeZone}}</td>
               <td data-label="Entries">{{entry_count}}</td>
               <td data-label="Next start">
                 {{#if nextStartValue}}
-                  <time data-local-datetime datetime="{{nextStartValue}}">{{nextStartLabel}}</time>
+                    <time datetime="{{nextStartValue}}">{{nextStartLabel}}</time>
                 {{else}}
                   {{nextStartLabel}}
                 {{/if}}
@@ -69,7 +71,7 @@
             </tr>
           {{/each}}
         {{else}}
-          <tr data-table-search-empty-default><td colspan="5" class="empty">No timetable groups yet.</td></tr>
+          <tr data-table-search-empty-default><td colspan="6" class="empty">No timetable groups yet.</td></tr>
         {{/if}}
       </tbody>
     </table>

test/clients-routes.test.js

@@ -17,7 +17,7 @@ function createHandlers() {
   return { app, handlers };
 }
 
-test('clients list defaults to client then ip ordering', async () => {
+test('clients list defaults to client ordering', async () => {
   const { app, handlers } = createHandlers();
 
   registerClientsRoutes(app, {
@@ -38,7 +38,7 @@ test('clients list defaults to client then ip ordering', async () => {
         return JSON.stringify(data.clients.map(function (client) {
           return {
             client_name: client.client_name,
-            clientIp: client.clientIp
+            clientId: client.clientId
           };
         }));
       }
@@ -46,9 +46,9 @@ test('clients list defaults to client then ip ordering', async () => {
     buildDashboardState: async () => ({
       screens: [],
       clients: [
-        { client_name: 'Beta', clientIp: '10.0.0.9' },
+        { client_name: 'Beta', clientId: 'beta-1' },
-        { client_name: 'Alpha', clientIp: '10.0.0.20' },
+        { client_name: 'Alpha', clientId: 'alpha-1' },
-        { client_name: 'Alpha', clientIp: '10.0.0.2' }
+        { client_name: 'Alpha', clientId: 'alpha-2' }
       ]
     }),
     requirePermission() {
@@ -76,9 +76,9 @@ test('clients list defaults to client then ip ordering', async () => {
   }, response, () => {});
 
   assert.deepEqual(JSON.parse(response.body), [
-    { client_name: 'Alpha', clientIp: '10.0.0.2' },
+    { client_name: 'Alpha', clientId: 'alpha-1' },
-    { client_name: 'Alpha', clientIp: '10.0.0.20' },
+    { client_name: 'Alpha', clientId: 'alpha-2' },
-    { client_name: 'Beta', clientIp: '10.0.0.9' }
+    { client_name: 'Beta', clientId: 'beta-1' }
   ]);
 });
 

test/timetable-group-form.test.js

@@ -97,26 +97,9 @@ function createRow(startValue, endValue) {
   return row;
 }
 
-function formatDateTimeLocalValue(date) {
-  function pad(value) {
-    return String(value).padStart(2, '0');
-  }
-
-  return [
-    String(date.getFullYear()).padStart(4, '0'),
-    '-',
-    pad(date.getMonth() + 1),
-    '-',
-    pad(date.getDate()),
-    'T',
-    pad(date.getHours()),
-    ':',
-    pad(date.getMinutes())
-  ].join('');
-}
-
 test('timetable group form highlights an end time that is too early', () => {
-  const row = createRow('2026-08-07T10:00', '2026-08-07T10:00');
+  const row = createRow('2026-08-07T12:00', '2026-08-07T12:00');
+  const timezoneInput = createInput('timezone', 'Europe/Berlin');
   const body = {
     rows: [row],
     querySelectorAll(selector) {
@@ -140,7 +123,10 @@ test('timetable group form highlights an end time that is too early', () => {
   };
   const form = {
     dataset: {},
-    addEventListener() {}
+    listeners: Object.create(null),
+    addEventListener(type, handler) {
+      this.listeners[type] = handler;
+    }
   };
   const templateRow = createRow('', '');
   const template = {
@@ -161,6 +147,9 @@ test('timetable group form highlights an end time that is too early', () => {
         if (id === 'timetable-group-form') {
           return form;
         }
+        if (id === 'timetable-group-timezone') {
+          return timezoneInput;
+        }
         if (id === 'timetable-entry-row-template') {
           return template;
         }
@@ -194,14 +183,47 @@ test('timetable group form highlights an end time that is too early', () => {
   const script = fs.readFileSync(scriptPath, 'utf8');
   vm.runInNewContext(script, sandbox, { filename: scriptPath });
 
+  assert.equal(row.startInput.value, '2026-08-07T12:00');
+  assert.equal(row.endInput.value, '2026-08-07T12:00');
   assert.equal(row.endInput.validityMessage, 'End time must be at least 1 minute after the start time.');
   assert.equal(row.endInput.classList.contains('is-invalid'), true);
   assert.equal(row.endInput.attributes['aria-invalid'], 'true');
 
-  row.endInput.value = formatDateTimeLocalValue(new Date(new Date(row.startInput.value).getTime() + 60000));
+  row.endInput.value = '2026-08-07T12:01';
   row.endInput.dispatchEvent({ type: 'input' });
 
   assert.equal(row.endInput.validityMessage, '');
   assert.equal(row.endInput.classList.contains('is-invalid'), false);
   assert.equal(Object.prototype.hasOwnProperty.call(row.endInput.attributes, 'aria-invalid'), false);
+
+  timezoneInput.value = 'Europe/London';
+  timezoneInput.dispatchEvent({ type: 'change' });
+
+  assert.equal(row.startInput.value, '2026-08-07T12:00');
+  assert.equal(row.endInput.value, '2026-08-07T12:01');
+  assert.equal(form.dataset.timetableTimezone, 'Europe/London');
+  assert.equal(form.dataset.dirty, 'true');
+
+  const formData = {
+    deleted: [],
+    appended: [],
+    delete(name) {
+      this.deleted.push(name);
+    },
+    append(name, value) {
+      this.appended.push([name, value]);
+    }
+  };
+
+  form.listeners.formdata({ formData: formData });
+
+  const startEntry = formData.appended.find(function (item) {
+    return item[0] === 'entry_start_datetime[]';
+  });
+  const endEntry = formData.appended.find(function (item) {
+    return item[0] === 'entry_end_datetime[]';
+  });
+
+  assert.equal(startEntry[1], '2026-08-07T11:00:00.000Z');
+  assert.equal(endEntry[1], '2026-08-07T11:01:00.000Z');
 });

test/timetable-region-timezone.test.js

@@ -0,0 +1,295 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+const vm = require('node:vm');
+
+function loadScheduleModule(overrides) {
+  const timeDatePlaceholdersScript = fs.readFileSync(require.resolve('../src/web/public/js/shared/time-date-placeholders.js'), 'utf8');
+  const placeholderScript = fs.readFileSync(require.resolve('../src/web/public/js/shared/placeholder-utils.js'), 'utf8');
+  const scriptPath = require.resolve('../src/web/public/js/regions/type/schedule.js');
+  const script = fs.readFileSync(scriptPath, 'utf8');
+  const registry = new Map();
+  const customWindow = overrides && overrides.window ? overrides.window : {};
+  const sandbox = {
+    document: {
+      addEventListener() {}
+    },
+    window: {
+      pulseRegionTypes: {
+        register(type, module) {
+          registry.set(type, module);
+        }
+      },
+      pulseRegionUtils: {
+        escapeHtml(value) {
+          return String(value === undefined || value === null ? '' : value)
+            .replace(/&/g, '&')
+            .replace(/</g, '&lt;')
+            .replace(/>/g, '&gt;')
+            .replace(/"/g, '&quot;')
+            .replace(/'/g, '&#39;');
+        },
+        sanitizeRichText(value) {
+          return String(value === undefined || value === null ? '' : value);
+        }
+      },
+      placeholderChips: {
+        renderChips(tokens) {
+          return tokens.map((token) => '<span class="chip">{{' + token + '}}</span>').join(' ');
+        }
+      },
+      initialData: {
+        timetableGroups: [
+          {
+            id: 1,
+            name: 'Main board',
+            timezone: 'UTC',
+            entries: [
+              {
+                id: 101,
+                title: 'Launch',
+                short_description: 'Doors open',
+                start_datetime: '2026-08-09T10:00:00.000Z',
+                end_datetime: '2026-08-09T11:00:00.000Z'
+              }
+            ]
+          }
+        ]
+      },
+      Intl: Intl,
+      Date: Date,
+      Object: Object,
+      Array: Array,
+      Number: Number,
+      String: String,
+      Boolean: Boolean,
+      Math: Math,
+      JSON: JSON,
+      RegExp: RegExp,
+      console: console
+    },
+    ...customWindow
+  };
+  sandbox.window = Object.assign({}, sandbox.window, customWindow);
+
+  vm.runInNewContext(timeDatePlaceholdersScript, sandbox, { filename: 'time-date-placeholders.js' });
+  vm.runInNewContext(placeholderScript, sandbox, { filename: 'placeholder-utils.js' });
+  if (customWindow.placeholderUtils) {
+    sandbox.window.placeholderUtils = customWindow.placeholderUtils;
+  }
+  vm.runInNewContext(script, sandbox, { filename: scriptPath });
+  return registry.get('timetable');
+}
+
+test('timetable region editor lists timezone transforms in helper text', () => {
+  const module = loadScheduleModule();
+  const html = module.renderEditorCard({
+    region: { id: 47, label: 'Timetable' },
+    current: {
+      value: '<p>{{title}} {{start.tz()}} {{start.tz_short()}}</p>',
+      timetable_group_id: 1,
+      display_mode: 'current',
+      max_items: 3
+    },
+    timetableGroups: [
+      {
+        id: 1,
+        name: 'Main board',
+        timezone: 'UTC',
+        entries: []
+      }
+    ]
+  });
+
+  assert.match(html, /Placeholder values support transforms/);
+  assert.match(html, /<code>\{\{start\.tz\(\)\}\}<\/code>/);
+  assert.match(html, /<code>\{\{start\.tz_short\(\)\}\}<\/code>/);
+  assert.doesNotMatch(html, /class="chip">\{\{start\.tz\(\)\}\}<\/span>/);
+});
+
+test('timetable region editor shows supported date format tokens', () => {
+  const module = loadScheduleModule();
+  const html = module.renderEditorCard({
+    region: { id: 47, label: 'Timetable' },
+    current: {
+      value: '<p>{{start.format("MMM D, YYYY h:mm A")}}</p>',
+      timetable_group_id: 1,
+      display_mode: 'current',
+      max_items: 3
+    },
+    timetableGroups: [
+      {
+        id: 1,
+        name: 'Main board',
+        timezone: 'UTC',
+        entries: []
+      }
+    ]
+  });
+
+  assert.match(html, /Supported date format tokens/);
+  assert.match(html, /<th scope="col">Format<\/th>/);
+  assert.ok(html.indexOf('<td><code>D</code></td><td>1-31</td><td>The day of the month</td>') < html.indexOf('<td><code>ddd</code></td><td>Mon</td><td>The abbreviated weekday name</td>'));
+  assert.ok(html.indexOf('<td><code>ddd</code></td><td>Mon</td><td>The abbreviated weekday name</td>') < html.indexOf('<td><code>M</code></td><td>1-12</td><td>The month, beginning at 1</td>'));
+  assert.ok(html.indexOf('<td><code>YY</code></td><td>18</td><td>The two-digit year</td>') < html.indexOf('<td><code>YYYY</code></td><td>2018</td><td>The four-digit year</td>'));
+  assert.doesNotMatch(html, /<td><code>y<\/code><\/td>/);
+  assert.doesNotMatch(html, /<td><code>yyyy<\/code><\/td>/);
+  assert.doesNotMatch(html, /<td><code>yy<\/code><\/td>/);
+  assert.doesNotMatch(html, /<td><code>tz<\/code><\/td>/);
+  assert.doesNotMatch(html, /<td><code>tz_short<\/code><\/td>/);
+  assert.match(html, /Use these tokens inside <code>\.format\(\.\.\.\)<\/code>/);
+});
+
+test('timetable region preview resolves timezone placeholders from explicit timezone transforms', () => {
+  const module = loadScheduleModule();
+  const preview = module.renderPreview(
+    { id: 47, width: 500, height: 280 },
+    {
+      value: '<p>{{start.tz("UTC")}} {{start.tz_short("UTC")}}</p>',
+      timetable_group_id: 1,
+      display_mode: 'both',
+      max_items: 3
+    },
+    {
+      timetableGroups: [
+        {
+          id: 1,
+          name: 'Main board',
+          timezone: 'UTC',
+          entries: [
+            {
+              id: 101,
+              title: 'Launch',
+              short_description: 'Doors open',
+              start_datetime: '2026-08-10T10:00:00.000Z',
+              end_datetime: '2026-08-10T11:00:00.000Z'
+            }
+          ]
+        }
+      ]
+    }
+  );
+
+  assert.match(preview, /UTC/);
+});
+
+test('timetable placeholder format transform respects uppercase and lowercase day period tokens', () => {
+  const placeholderScript = fs.readFileSync(require.resolve('../src/web/public/js/shared/placeholder-utils.js'), 'utf8');
+  const sandbox = {
+    window: {},
+    Intl: Intl,
+    Date: Date,
+    Object: Object,
+    Array: Array,
+    Number: Number,
+    String: String,
+    Boolean: Boolean,
+    Math: Math,
+    JSON: JSON,
+    RegExp: RegExp,
+    console: console
+  };
+
+  vm.runInNewContext(placeholderScript, sandbox, { filename: 'placeholder-utils.js' });
+
+  const upper = sandbox.window.placeholderUtils.resolvePlaceholderExpression(
+    { start: '2026-08-09T13:05:00.000Z' },
+    'start.format("MMM D, YYYY h:mm A")'
+  );
+  const lower = sandbox.window.placeholderUtils.resolvePlaceholderExpression(
+    { start: '2026-08-09T13:05:00.000Z' },
+    'start.format("MMM D, YYYY h:mm a")'
+  );
+
+  assert.match(String(upper), /PM$/);
+  assert.match(String(lower), /pm$/);
+});
+
+test('timetable timezone abbreviation changes across daylight saving boundaries', () => {
+  const module = loadScheduleModule();
+  const preview = module.renderPreview(
+    { id: 47, width: 500, height: 280 },
+    {
+      value: '<p>{{start.tz_short("Europe/London")}}</p>',
+      timetable_group_id: 1,
+      display_mode: 'both',
+      max_items: 10
+    },
+    {
+      timetableGroups: [
+        {
+          id: 1,
+          name: 'London board',
+          timezone: 'Europe/London',
+          entries: [
+            {
+              id: 201,
+              title: 'Before DST ends',
+              short_description: '',
+              start_datetime: '2026-10-24T12:00:00.000Z',
+              end_datetime: '2026-10-24T13:00:00.000Z'
+            },
+            {
+              id: 202,
+              title: 'After DST ends',
+              short_description: '',
+              start_datetime: '2026-10-26T12:00:00.000Z',
+              end_datetime: '2026-10-26T13:00:00.000Z'
+            }
+          ]
+        }
+      ]
+    }
+  );
+
+  assert.match(preview, /BST/);
+  assert.match(preview, /(GMT|UTC)/);
+});
+
+test('timetable preview does not force the group timezone into placeholder transforms', () => {
+  const calls = [];
+  const module = loadScheduleModule({
+    window: {
+      placeholderUtils: {
+        resolvePlaceholderExpression(value, expression, options) {
+          calls.push({ expression, options: options || {} });
+          return options && options.timeZone ? options.timeZone : 'local';
+        },
+        formatPlaceholderValue(value) {
+          return String(value === undefined || value === null ? '' : value);
+        }
+      }
+    }
+  });
+
+  const preview = module.renderPreview(
+    { id: 47, width: 500, height: 280 },
+    {
+      value: '<p>{{start.tz_short()}}</p>',
+      timetable_group_id: 1,
+      display_mode: 'both',
+      max_items: 3
+    },
+    {
+      timetableGroups: [
+        {
+          id: 1,
+          name: 'Madrid board',
+          timezone: 'Europe/Madrid',
+          entries: [
+            {
+              id: 101,
+              title: 'Launch',
+              short_description: 'Doors open',
+              start_datetime: '2026-08-10T10:00:00.000Z',
+              end_datetime: '2026-08-10T11:00:00.000Z'
+            }
+          ]
+        }
+      ]
+    }
+  );
+
+  assert.match(preview, /local/);
+  assert.equal(calls.length > 0 ? Boolean(calls[0].options && calls[0].options.timeZone) : false, false);
+});

test/timetable-region.test.js

@@ -0,0 +1,42 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const { buildSlidePayload } = require('../src/data/slides');
+
+test('buildSlidePayload normalizes timetable region fields', async () => {
+  const pool = {
+    async query(sql) {
+      if (sql.includes('FROM c_templates st')) {
+        return [[{ id: 9, name: 'Template 9', canvas_size_id: 1, canvas_size_width: 1920, canvas_size_height: 1080 }]];
+      }
+
+      if (sql.includes('FROM c_template_regions')) {
+        return [[{ id: 47, template_id: 9, region_key: 'timetable', region_type: 'timetable', label: 'Timetable' }]];
+      }
+
+      return [[]];
+    }
+  };
+
+  const payload = await buildSlidePayload(pool, {
+    body: {
+      title: 'Timetable slide',
+      template_id: '9',
+      region_text_47: '<p>{{title}}</p>',
+      region_timetable_group_id_47: '1',
+      region_timetable_display_mode_47: 'current',
+      region_timetable_max_items_47: '7'
+    },
+    files: []
+  }, null);
+
+  const content = JSON.parse(payload.contentJson);
+  assert.equal(content.timetable.type, 'timetable');
+  assert.equal(content.timetable.text, '<p>{{title}}</p>');
+  assert.equal(content.timetable.value, '<p>{{title}}</p>');
+  assert.equal(content.timetable.timetable_group_id, '1');
+  assert.equal(content.timetable.display_mode, 'current');
+  assert.equal(content.timetable.max_items, '7');
+  assert.equal(Object.prototype.hasOwnProperty.call(content.timetable, 'timetable_display_mode'), false);
+  assert.equal(Object.prototype.hasOwnProperty.call(content.timetable, 'timetable_max_items'), false);
+});

test/timetables-duplicate.test.js

@@ -14,7 +14,8 @@ test('timetable duplicate helper copies group and entry fields', () => {
   const group = {
     id: 5,
     name: 'Morning Shift',
-    short_description: 'Weekday events'
+    short_description: 'Weekday events',
+    timezone: 'Europe/Berlin'
   };
   const entry = {
     id: 12,
@@ -32,6 +33,7 @@ test('timetable duplicate helper copies group and entry fields', () => {
   assert.equal(duplicateGroup.name, 'Copy of Morning Shift');
   assert.equal(duplicateGroup.short_description, 'Weekday events');
   assert.equal(duplicateGroup.shortDescription, 'Weekday events');
+  assert.equal(duplicateGroup.timezone, 'Europe/Berlin');
   assert.equal(duplicateEntry.id, null);
   assert.equal(duplicateEntry.schedule_group_id, null);
   assert.equal(duplicateEntry.title, 'Opening');
@@ -42,7 +44,7 @@ test('timetable duplicate helper copies group and entry fields', () => {
 
 test('timetable duplicate form model keeps info toast variant and secondary actions', () => {
   const model = buildTimetableGroupFormViewModel(
-    { id: null, name: 'Morning Shift', shortDescription: 'Weekday events' },
+    { id: null, name: 'Morning Shift', shortDescription: 'Weekday events', timezone: 'Europe/Berlin' },
     [],
     'Review the copied values and save when ready.',
     { permissionKeys: ['timetables.create'] },
@@ -52,6 +54,7 @@ test('timetable duplicate form model keeps info toast variant and secondary acti
 
   assert.equal(model.messageVariant, 'info');
   assert.equal(model.showSaveSecondaryActions, true);
+  assert.equal(model.timetableGroup.timezone, 'Europe/Berlin');
 });
 
 test('timetable list template includes duplicate action', () => {

test/timetables-routes.test.js

@@ -0,0 +1,155 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+require('../src/common');
+
+const registerTimetableRoutes = require('../src/web/routes/data-sources/timetables/routes');
+
+function createApp() {
+  const handlers = {};
+  return {
+    handlers: handlers,
+    app: {
+      get(path, ...routeHandlers) {
+        handlers['GET ' + path] = routeHandlers;
+      },
+      post(path, ...routeHandlers) {
+        handlers['POST ' + path] = routeHandlers;
+      }
+    }
+  };
+}
+
+function createConnection() {
+  const queries = [];
+  return {
+    queries: queries,
+    async beginTransaction() {
+      queries.push(['beginTransaction']);
+    },
+    async query(sql, params) {
+      queries.push([sql, params]);
+      if (String(sql).indexOf('INSERT INTO i_timetable_groups') !== -1) {
+        return [{ insertId: 42 }];
+      }
+      return [{}];
+    },
+    async commit() {
+      queries.push(['commit']);
+    },
+    async rollback() {
+      queries.push(['rollback']);
+    },
+    release() {
+      queries.push(['release']);
+    }
+  };
+}
+
+test('timetable create and update persist the selected timezone', async () => {
+  const connection = createConnection();
+  const { app, handlers } = createApp();
+
+  registerTimetableRoutes(app, {
+    pool: {
+      getConnection() {
+        return connection;
+      }
+    },
+    common: {
+      fetchTimetableGroupById: async function () {
+        return {
+          id: 7,
+          name: 'Existing',
+          short_description: 'Old description',
+          timezone: 'Europe/London'
+        };
+      },
+      fetchDuplicateName: async function () {
+        return false;
+      },
+      buildTimetableGroupPayload: function (req) {
+        return {
+          name: req.body.name,
+          shortDescription: req.body.short_description,
+          timezone: req.body.timezone
+        };
+      },
+      fetchTimetableEntriesByGroupId: async function () {
+        return [];
+      }
+    },
+    getAuditUserId: function () {
+      return 9;
+    },
+    redirectAfterSave: function (_req, res, url) {
+      res.redirect(url);
+    },
+    parseDateTimeLocal: function (value) {
+      return value ? new Date(value) : null;
+    },
+    requirePermission: function () {
+      return function (_req, _res, next) {
+        next();
+      };
+    }
+  });
+
+  const createRoute = handlers['POST /data-sources/timetables'][1];
+  const updateRoute = handlers['POST /data-sources/timetables/:id'][1];
+
+  const createResponse = {
+    redirects: [],
+    redirect(url) {
+      this.redirects.push(url);
+    },
+    status() {
+      return this;
+    }
+  };
+
+  await createRoute({
+    body: {
+      name: 'Morning',
+      short_description: 'Breakfast block',
+      timezone: 'Europe/Berlin'
+    },
+    currentUser: { id: 1 },
+    query: {}
+  }, createResponse, function () {});
+
+  assert.deepEqual(connection.queries[1], [
+    'INSERT INTO i_timetable_groups (name, short_description, timezone, created_by, modified_by) VALUES (?, ?, ?, ?, ?)',
+    ['Morning', 'Breakfast block', 'Europe/Berlin', 9, 9]
+  ]);
+  assert.equal(createResponse.redirects[0], '/data-sources/timetables/42/edit');
+
+  connection.queries.length = 0;
+
+  const updateResponse = {
+    redirects: [],
+    redirect(url) {
+      this.redirects.push(url);
+    },
+    status() {
+      return this;
+    }
+  };
+
+  await updateRoute({
+    params: { id: '7' },
+    body: {
+      name: 'Morning',
+      short_description: 'Breakfast block',
+      timezone: 'Europe/Berlin'
+    },
+    currentUser: { id: 1 },
+    query: {}
+  }, updateResponse, function () {});
+
+  assert.deepEqual(connection.queries[1], [
+    'UPDATE i_timetable_groups SET name = ?, short_description = ?, timezone = ?, modified_by = ? WHERE id = ?',
+    ['Morning', 'Breakfast block', 'Europe/Berlin', 9, 7]
+  ]);
+  assert.equal(updateResponse.redirects[0], '/data-sources/timetables/7/edit');
+});