Is this world clock free to use?

Yes, completely free with no account or payment required.

Does it upload my data to a server?

No. Everything runs in your browser. No data is ever sent to any server.

Does it work offline?

Yes. Once the page has loaded, the clock continues to run even without an internet connection.

Which timezones are supported?

Seoul, Ho Chi Minh City, Tokyo, Shanghai, UTC, London, Paris, New York, Chicago, Denver, Los Angeles, Honolulu, and Sydney — 13 cities in total. For the United States that covers Eastern (New York), Central (Chicago), Mountain (Denver), Pacific (Los Angeles), and Hawaii (Honolulu) time.

Are my selected cities saved between visits?

Yes. Your city selections and 12/24-hour preference are saved in your browser's localStorage and restored automatically.

Does it handle daylight saving time automatically?

Yes. Times are formatted through the browser's own internationalisation support using IANA timezone identifiers such as Europe/London rather than fixed offsets, so a city shifts on its own changeover date without anything needing to be updated here. The label under each city name also switches between the standard and daylight abbreviation (for example EST and EDT) to match.

Why show the date next to the time?

Because the date is the part people get wrong. Between Seoul and Los Angeles the clock difference is obvious, but they are frequently on different calendar days, and a meeting booked on the wrong side of midnight is a genuinely common mistake. Seeing both together makes it visible at a glance.

🕐 World Clock – Live Multi-Timezone Clock

Instantly see the current time in multiple cities around the world — free, no sign-up required, and runs entirely in your browser with no data sent anywhere.

Private by design. This tool runs entirely in your browser — nothing you enter is uploaded, and it works offline.

About

This world clock displays live, ticking time for up to 13 timezones: Seoul, Tokyo, Shanghai, Ho Chi Minh City, UTC, London, Paris, New York, Chicago, Denver, Los Angeles, Honolulu, and Sydney. Each card shows the current abbreviation and UTC offset, such as EDT · UTC−4, so you can tell whether a city is on daylight saving time right now. You can add or remove cities freely, toggle between 12-hour and 24-hour formats, and your selections are saved locally in your browser. Because everything runs client-side with no server involved, your data never leaves your device — making it safe to use even on sensitive work schedules.

How to use

Select a city from the dropdown at the top of the page.
Click '＋ Add' to add it as a clock card.
Watch the live time update every second on each card.
Toggle 12-hour / 24-hour format with the button on the right.
Click the trash icon on any card to remove that timezone.

FAQ

Is this world clock free to use?: Yes, completely free with no account or payment required.
Does it upload my data to a server?: No. Everything runs in your browser. No data is ever sent to any server.
Does it work offline?: Yes. Once the page has loaded, the clock continues to run even without an internet connection.
Which timezones are supported?: Seoul, Ho Chi Minh City, Tokyo, Shanghai, UTC, London, Paris, New York, Chicago, Denver, Los Angeles, Honolulu, and Sydney — 13 cities in total. For the United States that covers Eastern (New York), Central (Chicago), Mountain (Denver), Pacific (Los Angeles), and Hawaii (Honolulu) time.
Are my selected cities saved between visits?: Yes. Your city selections and 12/24-hour preference are saved in your browser's localStorage and restored automatically.
Does it handle daylight saving time automatically?: Yes. Times are formatted through the browser's own internationalisation support using IANA timezone identifiers such as Europe/London rather than fixed offsets, so a city shifts on its own changeover date without anything needing to be updated here. The label under each city name also switches between the standard and daylight abbreviation (for example EST and EDT) to match.
Why show the date next to the time?: Because the date is the part people get wrong. Between Seoul and Los Angeles the clock difference is obvious, but they are frequently on different calendar days, and a meeting booked on the wrong side of midnight is a genuinely common mistake. Seeing both together makes it visible at a glance.