v1.26.59LatestMay 2026
Firefox Launch & Settings Persistence
3 New3 Improved4 Fixed
ClockinSync is now live on the Mozilla Add-on Marketplace. This release also fixes DST and holiday warning toggles not persisting across sessions, and ships a series of UI polish improvements across the settings panel.
NewOfficial Firefox Add-on published on the Mozilla Add-on Marketplace (AMO) install without sideloading
NewFull WebExtensions API port every feature works on Firefox 109 and later
NewFirefox-native browser notifications for meeting reminders and pre-alerts
FixedDST warnings toggle and holiday warnings toggle now correctly persist across browser sessions settings were not being restored on popup reopen
FixedWork Per City and Work Use Base sub-rows now correctly grey out and disable when Work Hours is toggled off
FixedPopup width was inconsistent on Firefox at non-default browser zoom levels
FixedSlider thumb rendered as a plain grey circle on Firefox, now matches the Chrome & Edge gradient style across all browsers
ImprovedTime slider now uses cross-browser CSS ensuring identical appearance on Chrome, Firefox, and Edge
ImprovedExtension icons updated to meet Firefox AMO submission guidelines and branding requirements
ImprovedPage annotation correctly handles Firefox's shadow DOM isolation used inside Gmail
v1.26.40May 2026
General Improvements & Fixes
3 Improved4 Fixed
This update focuses on performance, reliability, and usability improvements across the extension including faster city search, smoother drag-and-drop interactions, improved reminder notifications, expanded holiday coverage, and multiple UI and input-related fixes.
ImprovedDrag-to-reorder city rows is more responsive reduced activation threshold and smoother placeholder preview
ImprovedCity search now returns results ~60 ms faster via an improved local city index
ImprovedReminder pre-alert notification body now includes the reminder title and the original timezone
FixedHoliday alerts were not appearing for several major Indian public holidays Diwali, Holi, and Republic Day now correctly covered
Fixed/time shortcode no longer triggers accidentally inside password fields or account login forms
FixedAnnotation tooltip was clipped by the viewport edge on wide-monitor layouts at 150% browser zoom
FixedSettings panel scroll position reset unexpectedly when toggling any individual switch
v1.26.20April 2026
Licensing, Sync & Plan Management
7 New4 Improved
Full account and licensing infrastructure lands sign in with Google, purchase Pro or Lifetime plans via Stripe, and keep your world clock synced every 24h.
NewGoogle Sign-In via Chrome's built-in identity API links your extension to your purchased plan automatically
NewPro plan: yearly subscription via Stripe unlocks unlimited timezones, reminders, profiles, and all Pro features
NewLifetime plan: one-time purchase with no recurring charge available via Stripe
NewFree trial: eligible users can activate a time-limited trial of Lifetime directly from the plan picker inside the extension
NewPlan details panel in settings: shows current limits, usage counters per feature, and live progress bars for weekly quotas
NewPromo code support: redeem discount codes at checkout for one-time reduced pricing on any paid plan
NewAnonymous usage token for signed-out users: usage limits are tracked without requiring an account
ImprovedSettings panel now shows signed-in account email, current plan badge, and a one-click force-sync button
ImprovedFeature toggles that require a higher plan are visually locked with an Upgrade prompt no silent failures
ImprovedLicense polling runs every 30 minutes via the alarms API plan changes after purchase reflect inside the extension without a restart
ImprovedServer time calibration runs on startup to ensure reminders and DST warnings fire at the correct moment regardless of local clock accuracy
v1.26.0April 2026
Performance & Stability
3 Improved3 Fixed2 Perf
Focused entirely on speed and reliability ~40% faster popup cold-start, leaner memory footprint, timezone database updated to the 23000+ cities, and a series of stability fixes across reminders, profiles, and DST detection.
PerfPopup cold-start time reduced by ~40% across all supported browsers measured on both high-end and entry-level hardware
PerfExtension memory footprint reduced by 22% — improvement is most noticeable with 10 or more cities in your list
ImprovedTimezone database updated to 23000+ cities, incorporating new DST rules for Brazil, Egypt, and Kazakhstan
ImprovedProfile switching now transitions with a smooth fade animation instead of a hard snap
ImprovedReminder list automatically scrolls to the nearest upcoming reminder when the panel opens
FixedDST countdown occasionally displayed an incorrect timezone name for cities in the southern hemisphere
FixedMicrosoft Edge extension badge failed to refresh time on DST change day
FixedRare race condition causing duplicate city rows when adding cities in rapid succession
v1.25.0April 2026
Reminder System Overhaul
7 New2 Improved1 Fixed
The meeting reminder system is completely rebuilt, richer recurrence patterns, configurable pre-alerts, automatic DST compensation, and a fully redesigned reminder list with live countdowns and urgency states.
NewFive recurrence patterns: Once, Daily, Weekdays, Weekly, Monthly selectable via pill buttons inside the reminder form
NewPre-alert notifications: choose 10 minutes, 15 minutes, 30 minutes, or 1 hour ahead of any reminder
NewDST-aware scheduling: when clocks change in the reminder's timezone, recurring reminders auto-adjust to preserve the intended local time
NewProgress bar in the reminder list showing elapsed time toward each upcoming trigger
NewThree urgency states: Pending (blue) → Urgent under 1 hour (amber) → Overdue (red) — each with distinct colour coding
NewLive countdown timer displayed next to each reminder e.g., "in 3h 22m"
NewEach reminder now shows its scheduled time in the original timezone — e.g., "09:00 London" so it is always unambiguous
ImprovedRedesigned date + time picker with an integrated month calendar widget directly inside the popup panel
ImprovedEditing a reminder opens in-place without closing or reloading the panel
FixedMonthly reminders set on the 29th–31st now correctly snap to the last available day of shorter months
v1.24.0April 2026
Named Profiles & Clock Profiles
5 New2 Improved
Organise your world clock into named profiles, Clients, Team, Projects and switch the entire city set with one click. Each profile has its own independent city list and working hours configuration.
NewNamed profiles: create unlimited profiles on paid plans (up to 2 on Free), each with its own independent city list
NewProfile pill tabs at the top of timezone list, switch your whole city set in one click
NewCreate a profile by typing a name and saving your current cities to it instantly
NewRename and delete profiles from the dedicated profiles management panel
NewProfiles persist across browser restarts.
ImprovedPopup header redesigned to show profile pills without reducing the visible city list height
ImprovedProfile switching now transitions with a smooth fade animation instead of a hard snap
v1.23.0March 2026
Holiday Database Expansion & DST Fixes
4 Improved2 Fixed
Holiday coverage doubles to 40+ countries with english names, Southern-hemisphere DST detection is now fully correct.
ImprovedHoliday database expanded from 20 to 40+ countries, adding South America, South-East Asia, the Middle East, and Sub-Saharan Africa
ImprovedHoliday names displayed in english instead of locally used form where available.
ImprovedHoliday and DST banners stack cleanly when both apply to the same city on the same day, no overlap or truncation
ImprovedCity card date badge now shows a subtle holiday indicator when a holiday is within 7 days
FixedDST warnings were absent for southern hemisphere cities — Sydney, Auckland, Santiago, and Johannesburg now work correctly
FixedHoliday alerts were missing for several major Indian public holidays — Diwali, Holi, and Republic Day now correctly covered
v1.22.0March 2026
Annotation Improvements & Clipboard Detection
2 New2 Improved4 Fixed
Broader and smarter time-string detection on web pages, a new keyboard toggle shortcut, multiple simultaneous tooltips.
NewClipboard popup shows all your saved cities with converted times; click any row to see the formatted result
NewClipboard detection can be enabled or disabled from the Integrations section in settings
ImprovedAnnotation verified and optimised for Gmail, Notion, Slack, Google Docs, Confluence, GitHub Issues, and Linear
ImprovedSettings panel reorganised into four sections: General, Appearance, Integrations, Notifications
FixedAnnotation tooltip was interfering with the Google Docs comment toolbar on narrow viewport widths
FixedTimes inside PRE and CODE blocks are no longer annotated — avoids marking log file timestamps as timezone references
FixedAnnotation tooltip occasionally failed to dismiss on Notion pages using custom web fonts
Fixed/time shortcode results picker sometimes rendered behind a sticky header in Slack web app
v1.21.0March 2026
/time Shortcode Enhancements
2 New2 Improved2 Fixed
The /time shortcode gets smarter — city autocomplete, and full keyboard navigation in the results picker.
NewCity autocomplete: type partial names after /time and get instant suggestions from the full city list
NewKeyboard navigation in the results picker: ↑↓ arrows to move, Enter to paste, Escape to dismiss
ImprovedResults picker auto-closes after a paste action no more manual Escape needed
ImprovedResult rows now show a day-shift indicator (+1d / −1d) when the converted time crosses midnight
Fixed/time shortcode was conflicting with Notion's own slash-command menu — now uses a reserved prefix to avoid clashes
Fixed/time shortcode no longer triggers accidentally inside password fields or account login forms
v1.20.0March 2026
Microsoft Edge Support
2 New1 Improved2 Fixed
ClockinSync is now available on the Microsoft Edge Add-ons store with full feature parity and Edge-native optimisations.
NewOfficial Microsoft Edge Add-ons store listing install directly without sideloading
NewEdge-compatible permission model requiring fewer prompts during installation
ImprovedExtension toolbar icon updated to align with Edge's Fluent Design visual language
FixedPopup layout was misaligned on Edge at 125% Windows system display scaling
FixedMicrosoft Edge extension badge failed to refresh time on DST change day
v1.18.0March 2026
/time Shortcode
6 New
Convert times without switching tabs. Type /time in any text field across any website or Teams, Slack, Gmail, Notion, Google Docs to get instant conversions for your whole team in yout timezone list.
New/time shortcode engine triggers in any text field across Teams, Slack, Gmail, Notion, Google Docs, and virtually any web app
New/time now shows the current time across every saved city in a floating results picker
New/time [time] [city] — converts a specific time in any city, e.g. /time 3pm Tokyo
NewSupports both 12-hour (3pm, 9:30am) and 24-hour (15:00, 09:30) input formats
NewResults picker: a floating panel showing city name, converted time, and day shift click any row to paste
NewAfter paste, the /time trigger text is replaced with a clean formatted time string
v1.16.0February 2026
Page Annotation Engine
6 New
ClockinSync now reads every page you visit and converts timezone references on the fly hover your mouse any detected time to see your whole team's local equivalent in a rich tooltip.
NewPage annotation engine, scans any webpage for time strings like "3pm EST" or "10:00 PST" and marks them with a purple underline
NewHover any annotated time to see instant conversions for all your saved cities in a tooltip
NewBASE badge in the tooltip clearly marks your home city for quick orientation
NewGreen/red working-hours dot per city inside the tooltip, see who is available at that exact time
NewDay-shift indicator (+1d / −1d) in tooltip rows when the converted time crosses midnight
NewAnnotation tested and working in Gmail, Notion, Slack, Google Docs, GitHub, and Linear
v1.14.0February 2026
Meeting Reminders
5 New1 Improved
Set timezone-aware meeting reminders directly from the extension, with native browser notifications, recurrence options, and a built-in calendar date picker.
NewReminders panel — add, view, edit, and delete meeting reminders directly inside the popup
NewFull date picker: integrated month calendar widget, no manual date typing needed
NewTimezone selector inside the reminder form, schedule in any city's local time, not just your own
NewNative browser notifications: an OS-level alert fires at the configured time
NewFirst recurrence options: Once, Daily, Weekly
ImprovedEdit any reminder in-place; single-click delete with confirmation
v1.12.0February 2026
NL Input & Working Hours
3 New3 Improved
Type time the way you think it, natural language input converts instantly to your base timezone. Working hours gets per-city customisation and a new overlap visualisation.
NewWorking hours configuration: set a custom start and end time per city for part-time workers and shift schedules
NewIn-hours indicator: the day/night dot turns bright green when a city is within its configured working hours
NewDedicated Working Hours section added to the settings panel with a global enable/disable toggle
ImprovedNL Input quick-convert bar: type "10pm New York" or "15:00 Tokyo" and get an instant conversion to your base timezone
ImprovedTime slider now highlights the configured overlap window as you scrub through the day
ImprovedWorking hours overlap visible per city row — no need to open settings to check availability
v1.10.0February 2026
DST Warnings
4 New1 Improved
Daylight Saving Time is now tracked for every city in your list, automatic 7-day countdown banners and a detailed change-day alert for every IANA timezone, including the southern hemisphere.
NewDST detection for all IANA-covered timezones — zero configuration required
NewAmber warning banner on affected city cards starting 7 days before the clock change
NewDay-of red alert: displays direction (spring forward / fall back), exact time of change, and number of minutes affected
NewCountdown shows days remaining — e.g., "DST forward 1h at 02:00 in 3 days"
ImprovedCity card layout updated to accommodate both a holiday and a DST banner simultaneously without expanding popup height
v1.8.0February 2026
Public Holiday Alerts
4 New1 Improved
ClockinSync now warns you before public holidays catch you off guard, amber banners 7 days out, red alerts on the day itself. Launches with coverage for 20 countries.
NewPublic holiday database covering 20 countries at launch, refreshed automatically, no extension update required
NewAmber warning banner on city cards 7 days before any public holiday
NewRed alert banner on the day of the holiday, displaying the full holiday name
NewHoliday data updates automatically — no manual refresh or extension update required
ImprovedCity card date badge now shows a subtle holiday indicator when a holiday is within 7 days
v1.6.0February 2026
Working Hours
3 New1 Improved
Configure working hours globally and see at a glance who is actually available, green dot means in hours, red means not. The time slider highlights the shared overlap window as you drag.
NewWorking hours configuration: set a global start and end time applied across all saved cities
NewIn-hours indicator: the day/night dot turns bright green when a city is within its configured working hours
NewDedicated Working Hours section added to the settings panel
ImprovedTime slider now highlights the configured overlap window as you scrub through the day
v1.4.0February 2026
Dark Mode & NL Search Bar
3 New2 Improved1 Fixed
Dark mode with OS auto-detection lands, and the NL Search Bar lets you convert times, just type in the NL Search bar within extension.
NewDark mode: a full dark theme matching the extension's visual identity
NewThree theme options: Auto (follows your OS), Light, Dark — toggle in settings
NewNL Search Bar quick convert: type 3pm Rome or any time or city, get instant conversions within extension popup
ImprovedCity search performance improved, results appear in under 100 ms for common city names
ImprovedPopup respects the OS-level font size preference
FixedExtension toolbar icon appeared blurry on Retina and HiDPI displays at 2× pixel density
v1.2.0February 2026
Time Navigation
5 New1 Improved
A time slider lets you scrub through the entire day to preview team availability, see who is in working hours at any moment without guessing.
NewTime slider: drag horizontally to scrub any hour of the day, all city times update live as you drag
New"Now" button: one click resets the slider back to the current time
NewBase city: star any city to mark it as your home timezone, all offsets are shown relative to your base
NewDrag-to-reorder: drag city rows into any order you prefer
NewToolbar badge: base city time shown directly in the browser toolbar (toggleable)
ImprovedCity list now scrolls smoothly when you have more than 5 saved cities
v1.1.0February 2026
Core Improvements
4 New2 Improved1 Fixed
First post-launch update, day/night indicators, day-shift badges, 12h/24h format toggle, and city lists that finally persist across browser restarts.
NewDay/night indicator dot: green = daytime, red = nighttime — updated every minute in real time
NewDay-shift badge: shows Today, Tomorrow, Yesterday, or +Nd / −Nd relative to your local calendar date
New12h / 24h format toggle in settings — your preference persists across browser restarts
NewCity list now persists across browser restarts (previously reset every time the popup closed)
ImprovedCity search expanded to 600+ IANA timezone cities — up from 80 at initial launch
ImprovedAdd-city results now show country and UTC offset alongside the city name
FixedPopup width flickered momentarily when adding the very first city to an empty list
v1.0.0February 2026
Initial Release
6 New
ClockinSync launches on the Chrome Web Store. A fast, focused world clock and timezone converter for anyone working across multiple time zones, no account, no setup, no friction.
NewBrowser extension popup showing live times for up to 5 saved cities
NewCity search backed by the IANA timezone database (80 cities at launch)
NewAdd and remove cities from your personal list
NewAutomatic time refresh clocks update every minute from server time
NewEntirely local for free users: no account required, no data sent to any server
NewChrome Web Store listing, Manifest V3 compliant
v1.0.0 — February 2026 — Initial release
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