World Clock
Free online world clock. Current time in 95+ cities worldwide with local time zone offsets, dates and daylight saving handled automatically. Search, 12/24 hour, zero install.
How does the world clock know the correct time for each city?
It uses the IANA time zone database that is built into your browser together with the Intl.DateTimeFormat API. Your device keeps the clock accurate and the database keeps each zone's rules, including daylight saving, up to date.
Is daylight saving time handled automatically?
Yes. Each city is rendered through its IANA zone, so spring-forward and fall-back transitions appear in the displayed time and in the offset from your local clock without any manual settings.
What does the offset badge mean?
The badge shows the difference between that city and your own time zone right now, for example +8h or -5:30. It is relative to you, not to UTC, so you can instantly see how far ahead or behind a place is.
Why does the city list include UTC?
UTC is the global reference time used by aviation, computing and science. Keeping it in the list lets you compare any local clock against the absolute reference.
Can I search for a city?
Yes. Type in the search box and the grid filters instantly by city name, including local-language names. No page reload is needed.
Can I switch between 12-hour and 24-hour display?
Yes. The format selector switches every clock, including your local time card, between 24-hour and 12-hour display with AM/PM.
Does the clock work offline?
Once the page has loaded, everything is computed locally in your browser. No network request is needed to keep the clocks ticking.
Why might a time look slightly different from another website?
Rounding and update timing can differ by a second between sites. All clocks here refresh every second from your device clock, which is assumed to be synchronized.
How to Use World Clock
This world clock shows the current time in nearly 100 cities across every continent, each with its local date, weekday and exact offset from your own clock. Daylight saving comes straight from the IANA time zone database built into your browser, so it is always right. Everything is computed locally — no server is involved.
- Your own time zone sits in the highlighted card at the top, updating every second.
- Scroll the grid to compare cities side by side: each card shows local time, localized date and the +/− hour offset from you.
- Type in the search box to filter the grid instantly by city name, including local-language names.
- Use the format selector to switch every clock between 24-hour and 12-hour with AM/PM.
- Check the UTC card when you need the absolute global reference, for aviation, logs or servers.
Planning a call across time zones? Filter to the two relevant cities and compare the offset badges — they always reflect current daylight saving, so no manual math is needed.
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