World Clock

How to use World Clock

1. Choose a city or time zone from the drop-down.
2. Press Add clock and the live time appears at once.
3. Read the date, UTC offset and hours difference from your own time zone on each card.
4. Remove clocks you no longer need; the 12-hour switch changes the format of all clocks.

Why keep a world clock

Remote teams, families spread across countries, traders, students on exchange and frequent travellers all need quick answers to the question “what time is it there?”. Doing the mental arithmetic works until half-hour zones and daylight saving dates get involved. A permanent set of live clocks removes the guesswork and helps you avoid calling someone in the middle of the night.

Each card shows the local time, weekday and date, the offset from UTC and how it compares with your own zone. The moon and sun icon gives a rough sense of whether it is daytime or night there.

How time zones are calculated

The page reads your device’s current time and asks the browser’s built-in time zone database how that moment appears in each zone. That database holds the standard offset for every region and its daylight saving schedule, so results update automatically when a region moves its clocks forward or back. Some places use unusual offsets, such as UTC+5:45 in Nepal or UTC+9:30 in parts of Australia, and these are handled correctly.

Because the difference between cities can change during the year, do not rely on a figure you remembered in winter to plan a summer call. The live difference shown on the card is always for right now.

Tips

• Add the zones of your closest colleagues and relatives for a daily glance.
• Use the 24-hour format if your team schedules in military or UTC style.
• Add UTC as a neutral reference when coordinating many regions.
• Pair this page with the time zone converter when you need to plan a specific future date.
• Bookmark the page so it is one tap away.

Limits

Clocks run only while the page is open and may update more slowly in a background tab. The saved list lives in one browser on one device. The tool shows current time only; use a time zone converter to plan a future meeting.

Why use this world clock tool

• Live seconds. Every clock updates in real time using your device’s clock and each zone’s rules.
• Difference from you. Shows how many hours ahead or behind each place is, including half-hour zones.
• Saved locally. Your list is stored in your browser’s local storage, so it is ready next time, with no sign-in.
• Daylight saving aware. Offsets update automatically when a region changes its clocks.

Frequently asked questions

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