World Clock
The current time in cities around the world, with daylight saving handled for you.
How to use the world clock
Your own time always comes first, marked "Your time". It uses the time zone your device is set to, so there's nothing to choose. Below it you'll find London, New York, Tokyo and Dubai to start with.
Press Add city and start typing a city or a country. Use the arrow keys to move through the results and press Enter to add one. Each result shows the time there right now, which helps when you're picking between two cities in the same country.
To tidy up, press Edit. Each city gets a remove button and up and down buttons, and on a computer you can also drag a city by its handle. Press Done when you're finished. The 12-hour and 24-hour switch changes every clock at once.
Your list and format are remembered in this browser, so the page looks the same next time. Nothing is sent to us and there's no account. Each card also shows the UTC offset, a sun or moon for day or night, and whether it's already tomorrow or still yesterday there compared with you.
Time zones and daylight saving, simply explained
The world shares one reference time, called UTC. Every place sets its clocks a fixed amount ahead of or behind it. That amount is the UTC offset you see on each card, such as UTC+9 for Tokyo or UTC−5 for New York in winter. Most offsets are whole hours, but some places use half or quarter hours, like India at UTC+5:30 and Nepal at UTC+5:45.
Daylight saving time moves the clocks forward by an hour in summer and back again in autumn. Not every country does it, and those that do switch on different dates. North America and Europe change a few weeks apart, and countries in the southern hemisphere change in the opposite season. That's why the gap between two cities can shift by an hour for part of the year.
You don't need to track any of this. The world clock uses your browser's built-in time zone database, which records each region's offsets and daylight saving rules, so every card switches on the right date by itself. Your browser updates that database along with its regular updates.