London and New York
Choose Europe/London and America/New_York rather than assuming a permanent fixed-hour difference. Their daylight saving transition dates do not always match.
Keep your places together
Up to 12 live clocks. Type any time-zone identifier supported by your browser. Dates and UTC offsets account for each zone’s daylight saving rules.
Europe/London
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Loading current time…
UTC offset
America/New York
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Loading current time…
UTC offset
Asia/Tokyo
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Loading current time…
UTC offset
This uses your device clock and browser time-zone data. It does not synchronize your clock with a time server.
Inputs and results are processed in this browser. This tool does not upload your entries or retain them after a page refresh.
How to use the World Clock
- 01
Add a suggested time zone or type another browser-supported IANA identifier.
- 02
Choose 12-hour or 24-hour time and remove clocks you do not need.
- 03
Compare each clock’s date as well as its time. Copy or download a snapshot.
Examples
A half-hour offset
Asia/Kolkata displays a UTC offset of GMT+5:30. Offsets are not restricted to whole hours, so compare the displayed minutes as well as the hour.
Why region identifiers help
A name such as America/New_York identifies a region’s time rules, while a fixed UTC offset identifies only an offset. The selected region determines the current date and daylight saving offset using browser time-zone data.
Read the date before calling
Two places can show similar clock times on different calendar dates. Each card includes a full local date to make midnight crossings visible. The downloaded snapshot also includes a UTC timestamp for its capture instant.
Where the time comes from
The live instant comes from the device clock and is formatted separately for each zone. The tool does not contact a time service, verify your device clock, or independently distribute an up-to-date time-zone database.
What to know
- Up to 12 selected clocks; selections reset when the page is refreshed.
- Device clock errors and outdated browser time-zone data affect displayed results.
Common questions
Is this a complete list of places?
The suggestions are a short convenience list. You can type any IANA time-zone identifier that your browser accepts.
Will offsets change automatically?
The date formatting uses the zone’s offset at the displayed instant. It updates according to the time-zone rules available in your browser.
Can I compare a future meeting?
Use the meeting planner for a selected future date and local availability. This page shows the current instant only.