World Clock
See the current time in multiple cities and time zones at once, updating live.
How to use World Clock
- A few common cities are shown by default.
- Use the dropdown to add more cities.
- Remove any clock you don't need with its close button.
About this tool
The World Clock shows the current time in as many cities as you add, side by side, updating every second. Useful for scheduling across time zones, checking whether it's a reasonable time to call someone, or just seeing what time it is somewhere else right now. Times are read directly from your device's clock and your browser's built-in time zone database — nothing is fetched from a server.
Frequently Asked Questions
How accurate is the time shown?
It's read directly from your device's system clock, so it's only as accurate as your device's clock is set to be. Time zone offsets (including daylight saving time transitions) come from your browser's built-in time zone database, which is kept up to date automatically.
Does this account for daylight saving time?
Yes — time zone calculations use the IANA time zone database built into your browser, which correctly handles daylight saving transitions for each region, rather than a fixed UTC offset per city.
Can I use this to schedule a meeting across time zones?
Yes — add everyone's city and you can see at a glance what the current time is for each. For a specific future date, remember that some regions' offsets can shift around daylight saving transitions, which don't all happen on the same date worldwide.