World Clock
Shows the current date, time, weekday, and UTC offset in several time zones at once. Leave the box empty for a default set of major zones, or list the IANA zone names you want, such as "UTC, Asia/Tokyo, Europe/Berlin".
Shows the current date, time, weekday, and UTC offset in several time zones at once. Leave the box empty for a default set of major zones, or list the IANA zone names you want, such as "UTC, Asia/Tokyo, Europe/Berlin".
Every zone is read from the same instant, so the times are always consistent with each other. Press Run again to refresh. Runs entirely in your browser using its own time zone data — nothing is sent to a server.
Use cases
- Checking whether it is a reasonable hour to call a colleague abroad
- Comparing the working day across several offices at a glance
FAQ
Is my data sent to a server?
No — this tool runs entirely in your browser, using the time zone data already built into it.
Which zone names can I use?
IANA names such as America/New_York, Europe/London, or Asia/Kolkata. Up to 25 can be listed at once.
Does it update on its own?
No. It shows the moment you pressed Run. Press it again for the current time.
Is daylight saving accounted for?
Yes. The offsets come from your browser's own time zone database, which tracks daylight saving as it currently stands.