What is World Clock?

World Clock shows the current time in multiple cities and time zones at once. Compare times around the world to schedule international meetings or check business hours in other regions.

Search a roster of 50+ major cities — New York, London, Tokyo, Dubai, São Paulo and more — and pin the ones you care about to a dashboard. Each clock ticks every second and reads its offset from your device's IANA timezone data, so daylight saving and political changes are applied automatically. A world map view shows day/night terminator at a glance.

How to use

1. Browse or search the city and time zone list.
2. Click a city to add it to your clock dashboard — all clocks update in real time.
3. Rearrange or remove clocks to keep your most-used time zones front and center.

When to use

• Scheduling a recurring sync between teammates in three or four time zones.
• Checking when stock markets in New York, London, and Tokyo overlap each day.
• Calling family abroad without doing the timezone maths in your head every time.

Result

You're in New York scheduling a call with Tokyo and London. Add all three cities to see that when it's 9:00 AM in New York, it's 10:00 PM in Tokyo and 2:00 PM in London.

FAQ

Does this tool handle daylight saving time correctly?

Yes. Each city's offset comes from your device's IANA timezone data, which your operating system updates when DST rules change. A city like Sydney that observes DST will swing automatically when its local rules say to.

My city isn't in the list — can I add a custom timezone?

The list covers 50+ major cities across all continents, but you can't add a fully custom entry yet. If you don't see your city, pick a nearby one in the same timezone — for example Adelaide users can pin Darwin, both run on Australian time variants.

Does the time keep ticking if I leave the tab open all day?

Yes, the page refreshes every second. The clocks read from your device's system time, so as long as the operating system's clock is accurate the dashboard stays correct. Sync your computer's clock to NTP for best precision.

What's the difference between this and just searching 'time in Tokyo' on Google?

A Google search shows one city at a time. Here you pin a dashboard of every city you care about and see them side by side, with a single shared 'now' reference and the day/night map view. That makes the relative offsets easier to read.

Are my pinned cities saved between visits?

Yes. The list is saved on your device's local storage, so reloading the page or closing the tab keeps your pins. Clearing your saved site data or switching device wipes them. Pinning four to six cities again takes about thirty seconds.

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