World Clock

How to use the world clock

1. The page starts with your own time zone plus New York, London and Tokyo. Type another city, or a time zone name such as Europe/Paris, in the Add box and press Add. Suggestions appear as you type.
2. Each card shows the current time, the date, the offset from UTC, how far ahead or behind you it is, whether it is daytime or night there, and whether daylight saving time is in effect. Use Remove to take a place off the list.
3. Choose 12-hour or 24-hour style and turn seconds on or off. Fill in Show another date and time to see all cities at a future or past moment, which is useful around daylight saving changes.
4. In the Meeting time finder, choose two or three places, a date and working hours. The page lists the windows when everyone is at work and shows each place's clock in a table.

Where the times come from

This page never stores offsets from UTC in a table of its own. Each city is saved as an IANA time zone name such as America/New_York, and every time is asked from your browser through its built-in international date and time formatting. The browser carries the time zone rules, including daylight saving start and end dates, so the numbers follow whatever rules your browser knows for the date shown.

Daylight saving changes happen on different dates in different places. In 2026 the United States moves its clocks forward on March 8 and the United Kingdom and most of Europe on March 29, so for three weeks the gap between New York and London is 4 hours instead of the usual 5. The page handles that with no special case: change the date field to March 15, 2026 and you will see it. The tool marks a place with daylight saving time when its current offset is larger than its smallest offset that year.

Because the data lives in the browser, a very old browser or operating system may not know about a recent rule change. If a country changes its rules, update your browser.

Finding a time that works for everyone

The meeting finder walks through the chosen date in 30-minute slots, starting at midnight in the first place you choose. A slot counts only if the whole half hour falls inside working hours in every place. Neighboring slots merge into windows, shown first, followed by an hourly table.

Worked check for January 15, 2026 with 9 AM to 5 PM working hours: when it is 9:00 AM in New York it is 2:00 PM in London, so the shared window is 9:00 AM to 12:00 PM in New York, which is 2:00 PM to 5:00 PM in London. With London and Kolkata, which are 5 hours and 30 minutes apart, the window is 9:00 AM to 11:30 AM in London. New York and Tokyo have no shared 9 to 5 hours on that date.

A date can differ between places. The table marks times that fall on the previous or next day, so a late-evening slot is not mistaken for the same date. For one-off conversions use the time zone converter, and for technical timestamps use the Unix timestamp converter.

Saved lists and privacy

Your list of places and your clock style are saved in this browser, so they are there next time. Nothing is sent to a server and no account is needed. Use Reset the list to return to the starting set, or clear your site data to remove everything.

Assumptions and limits

• All offsets and daylight saving rules come from the time zone database inside your browser. The page adds no rules of its own and does not check them against a government source.
• The built-in city list is a convenience. Cities that share a zone, such as Delhi and Mumbai, are one entry. Other places can be added by typing the zone name your browser knows.
• Daytime means 6:00 AM up to 6:00 PM local time. It is a rough guide and not sunrise and sunset times.
• The "another date and time" box is read in your own time zone. A time that falls in a spring-forward gap is moved forward, and a time that occurs twice in a fall-back hour uses the earlier one.
• The meeting finder uses one set of working hours for every place and looks at a single calendar day of the first place.

Formulas reviewed October 10, 2026. See the calculation methodology for how SumPanda rounds, tests and sources its formulas.

Frequently asked questions