Gaps, not offsets
Each city leads with how far it is from you: −13h, +3:30h, or Base. The UTC offset sits beside it as a cross-check, and a date that isn't yours says yesterday or tomorrow.
World clock browser extension
Every time zone, measured from yours.
Skies keeps your cities in one popup. Each one shows its gap from your time, like −13h or +3:30h, under the color of its sky right now. And when a clock change is about to move that gap, Skies tells you two weeks ahead.
Free desktop extension for Chrome, Edge, Brave, Arc and Firefox 140+.
Tokyo
11:00
London
03:00
New York
22:00
San Francisco
19:00
All but you overlap01:00–02:00Your hours don't overlap — tap to exclude yourself
Features
Built for working across time zones
Everything opens from one click on the toolbar, and nothing gets in the way of reading the time.
A sky for every city
Cards take on the color of each city's sky right now — night, dawn, day, or twilight — worked out from where the sun actually is, so even the midnight sun looks right.
The clocks change, your gap moves
Two weeks before a time change, Skies tells you what it does to you: “In 9 days, Boston shifts to UTC−05. Your gap: 13 hours → 14 hours.” Including the case where you don't change your clocks at all and your colleague does.
Core Time
See when everyone's working hours overlap. No overlap today? Skies suggests the closest time. Someone off today? It shows when the next overlap is.
Time converter
Drag one slider across 24 hours and every city moves with it. Find a slot that works before you send the invite.
Your list, your way
Add up to 30 cities — search in English, Chinese or Japanese, or by an older name like Bangalore. Give them your own names and reorder them by drag or keyboard. Removed one by mistake? Undo.
Privacy
Your cities stay on your device.
- Works offline. Nothing is fetched from the internet — not city search, not sky colors, not fonts.
- No account. Install it and add a city. That's the whole setup.
- No tracking, no ads. The extension doesn't collect analytics.
- Saved in your browser. Your list and settings are kept locally, not on a server. Read the privacy policy
Know the time, wherever your team is.
Free desktop extension for Chrome, Edge, Brave, Arc and Firefox 140+.