World Clock

Track time around the globe

This online world clock shows the current local time in multiple cities at once. The time zone map underneath shows which half of the globe is in daylight right now, so you can easily see whether the person you're about to message is awake.

Search and add world city times

Search for a city and tap a result to add it to the bottom of the list. Tap the × to remove a city. The day/night map underneath updates in real time as the Earth turns.

Why use a world clock?

Whether you're working with distributed teams, making international calls, or planning a trip, it all starts with the same question: what time is it in the other city right now? Better than a web search, the world clock gives you an instant answer, with the time zone map showing who is in daylight before you message them.

See your times on all devices

The cities you add are saved in this browser, so your list is waiting for you the next time you open the page here. Log in with the Login button and your list syncs to your account, so the same cities show up on every device you sign in on.

Did you know?

The Earth rotates once every 24 hours, so the sun is high overhead in different places at different moments. Before the late 1800s, every town set its own noon by the local sun. The result was a chaos that British railways solved in 1840 by adopting a single time across their network; the United States followed in 1883, and an international agreement in 1884 carved the globe into zones across 24 hours. About 38 time zones are in use today, including a few at 30 and 45 minute offsets that lie between round hours on the grid.

Common questions

Why are some cities 30 or 45 minutes apart instead of a full hour?

A handful of regions chose non-hour offsets when their zones were set. India is at +5:30, Nepal at +5:45, parts of Australia at +9:30, parts of Newfoundland at -3:30. The world clock respects each location's actual offset.

How does daylight saving work?

Cities that observe DST shift on their region's official date, usually in March and October or November. Many cities in Asia, Africa, and Arizona don't shift. The world clock automatically adjusts with DST in your saved cities.

Can I share a list with colleagues?

Yes. Use the copy-link button at the top right to copy a link with your cities built into it, then send it. Whoever opens the link sees the same set of cities, each in its own local time. Your cities are still saved in this browser for your own next visit.

What does the shading on the map mean?

The dark side is the night half of the globe right now, based on the times for sunset and sunrise. The border between light and dark moves across the map in real time, so you can see who is in daylight hours before you message them.