World Clock
Track the current time in multiple cities and time zones at once. Add any timezone from a searchable list and compare its clock side by side with yours.
Updated September 2026 · Written and verified by Akash Pandey
World Clock
How to use the world clock
- A default set of major cities is shown on load, all ticking live.
- Search for another city or timezone and press Add to pin it to the grid.
- Each card shows the local time, the offset from UTC, and whether the zone is in daylight saving time.
- Remove a clock with the × button on its card.
Times are computed from your browser clock using the browser's timezone database, so they are always consistent with your system - no network needed and no drift.
Frequently asked questions
Is the world clock accurate?
It uses the browser's own timezone database and your system clock, the same source as your device's clock app, so it is as accurate as your device.
Which time zones can I add?
Every zone in the IANA timezone database, from luxury city names like "America/New_York" to offsets like "UTC+5:30". Type a city or an offset to filter.
How is daylight saving handled?
Automatically. The browser knows each zone's DST rules and switches times for you, including the current DST offset.
Does it work offline?
Yes. Nothing is fetched from the network; time formatting is computed in the browser.
Can I compare a meeting time across zones?
The arrows on each card show the time difference relative to your local time, which is enough to spot the best slot for most calls.
Does the world clock automatically handle Daylight Saving Time (DST)?
Yes. It uses the browser internationalization API (Intl.DateTimeFormat), which automatically accounts for daylight saving transitions according to official IANA timezone databases.
Can I display times in 24-hour military format?
Yes, times can be viewed in standard 12-hour AM/PM or 24-hour format depending on your preferred locale and time settings.
Does this page consume battery or CPU if left running in a background tab?
No. It uses a lightweight interval timer that synchronizes once per second and is throttled by modern browsers when the tab is inactive.