Features
- Seamless time-of-day gradients that update throughout the day
- 599 cities across 415 IANA time zones
- Fast, localized city and time-zone search
- Time travel up to 48 hours ahead in 15-minute steps
- Shared availability using each location's configured hours
- Home-relative differences with contextual UTC and DST details
- Drag, keyboard-reorder, and group clocks by time zone
- Named presets for work, family, travel, and more
- 12-hour or 24-hour time with optional seconds
- Standard, compact, and optional solar-aware display modes
- Optional Chrome Sync and portable JSON backups
- Keyboard-first, accessible, localized, and fully offline
Plan Across Time
Move every clock, local date, relative offset, and gradient up to 48 hours into the future. Meridian makes it easy to answer “what time will that be for everyone?” without opening a calendar or translating offsets in your head.
Set working or waking hours for the people that matter, then find the next shared window across the selected locations. Presets keep separate arrangements for work, family, and travel one click away.
How It Works
Each selected time zone contributes colors based on its local time. Browser-native gradients blend those colors across one high-resolution canvas, with subtle dithering to keep transitions smooth and free of visible bands or column edges.
Text automatically switches between light and dark using WCAG-aware contrast calculations. Local dates, offsets, gradients, and availability all respond to the same selected moment, so the interface remains coherent while planning ahead.
Meridian includes its fonts, city search data, translations, and time-zone coordinates. It works instantly and completely offline. Inspired by Figure It Out.
Privacy
Meridian runs entirely in your browser. Your configuration is stored locally by default using Chrome's storage API. Optional Chrome Sync uses your browser's built-in synced storage, and JSON export/import provides an account-independent backup.
The extension has no analytics, tracking, advertising, application servers, location permission, or runtime network requests. It does not collect, sell, transmit, or share personal data.
The extension requires a single permission:
- storage to save your clocks, settings, schedules, and optional synced configuration
Support
If you run into a bug or have a feature request, open an issue on the GitHub repository.
You can also reach me at [email protected].