World Clock
See the current time in cities around the world side by side, with dates, UTC offsets and daylight saving handled automatically.
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No cities on the clock yet — pick one above and press Add to clock.
How it works
This world clock shows the current time in as many cities as you like, side by side, and refreshes every second. Add a city from the picker, remove one with its × button, and your list is remembered in this browser for next time. Each row shows the local time, the weekday and date there (so you can see when a city is already on tomorrow), its UTC offset and whether it is morning, afternoon, evening or night — handy for working out whether it is a civilised hour to call.
Every city is a real IANA time zone, so daylight saving is applied automatically for the
moment being displayed: London reads UTC+01:00 in July and UTC+00:00 in January without
any manual adjustment. Tick Freeze at a fixed UTC moment to pin the whole
board to one instant instead of "now" — useful for planning a call or checking what a
timestamp means everywhere at once. All the maths uses your browser's built-in time zone
database (Intl.DateTimeFormat): nothing is sent to a server, there is no API
key, and no request leaves your device.
Frequently asked questions
How do I build my own world clock with the cities I care about?
Pick a city from the grouped picker and press "Add to clock" — it appears as a card showing the live time there, the weekday and date, the UTC offset and whether it is morning, afternoon, evening or night. "Add my time zone" drops your own zone onto the board, the × button on a card removes it, and you can keep up to 16 cities at once. Your list is saved in this browser's local storage, so the same board is waiting for you next visit; nothing is stored on a server and there is no account to create.
Does the world clock handle daylight saving time automatically?
Yes. Every city is a real IANA time zone read from your browser's built-in time zone database, so the offset shown is the one in force at the exact moment being displayed. London reads UTC+00:00 in January and UTC+01:00 in July, New York switches between UTC-05:00 and UTC-04:00, and Sydney between UTC+11:00 and UTC+10:00, with no manual adjustment from you. Half-hour and quarter-hour zones such as Mumbai (UTC+05:30) and Kathmandu (UTC+05:45) are shown correctly too.
Can I see what a specific time looks like in every city instead of right now?
Tick "Freeze at a fixed UTC moment" and enter a date and time in UTC. The whole board stops ticking and shows that single instant everywhere at once, which is the quickest way to check whether a proposed call lands at breakfast or at midnight for your colleagues, or to work out what a UTC timestamp in a log means in each office. Copy or download the frozen board as a plain text file to paste into an invite or a chat.