World Clock - Live Time in Every Timezone

How to use this tool

1. View current times. Open the page to see live clocks for New York, London, Tokyo, and Sydney by default. Time display follows your browser locale and may use 12-hour time with AM/PM or 24-hour time.
2. Add a timezone. Type a city or timezone name in the search box and select from the dropdown to add a new clock.
3. Remove a clock. Click the × button in the top-right corner of any clock card to remove it.
4. Reset to defaults. When your list differs from the defaults, use "Reset to defaults" to restore the original four clocks.
5. Share your clock list. Choose Copy link to copy a link that restores the current ordered list of up to 24 timezones. The list is encoded in the URL fragment and stays out of the page request.

How to use the world clock

The world clock displays live, continuously updating times for any city or timezone. By default it shows New York, London, Tokyo, and Sydney, four key reference points that cover the Americas, Europe, East Asia, and Oceania.

To add more cities, type in the search box and select from the list. Your selection is saved in your browser and will be there the next time you visit. Choose Copy link to share the current list, including its order, with someone else.

Reading the clock cards

Time display follows your browser locale, so it may use a 12-hour clock with AM/PM or a 24-hour clock. The large digits update every second.

• Time: Follows your browser locale and uses either 12-hour time with AM/PM or 24-hour time.
• Card color: Blue/light for daytime (8 AM–6 PM), amber for sunrise and sunset (6–8 AM, 6–8 PM), and dark for nighttime.
• UTC offset: Shows the timezone's current offset from UTC, e.g. UTC+9 or UTC-5.
• DST badge: Appears when that city is currently observing Daylight Saving Time, meaning its offset has shifted by +1 hour from standard.

Key world city times

Why do clocks differ from what I expect?

The most common cause is Daylight Saving Time. During DST, clocks are advanced by one hour, so the UTC offset temporarily changes. The DST badge on the card shows when this is in effect.

Another cause: some timezones observe non-integer offsets like UTC+5:30 (India) or UTC+9:30 (Adelaide, Australia). These are correctly handled by the IANA timezone database used in this tool.

Business hours overlap

When scheduling cross-timezone meetings, knowing the working-hours overlap is critical:

Open Meeting Planner to find a workable time

Daylight Saving Time schedule

• United States: clocks spring forward the 2nd Sunday in March; fall back the 1st Sunday in November.
• European Union: clocks change the last Sunday in March and last Sunday in October.
• Countries without DST: China, Japan, India, most of Africa, and Iceland observe no DST. Their UTC offsets are constant year-round.
• During the 2–3 week gap between US and EU transitions, offsets between them temporarily differ by 1 hour from their usual values.

IANA timezone database note

This tool uses the IANA timezone database (also called the Olson database), which is the definitive source for time zone rules used by operating systems, browsers, and most programming languages. Timezones are identified by region/city names (e.g., America/New_York, Europe/London) rather than offset strings like UTC-5. This is important because the correct offset at any given moment depends on DST status, which the IANA name handles automatically.