Does this handle daylight saving?

Yes, and historically as well as today. The offsets come from the IANA time-zone database inside your browser rather than from a fixed table, so a date before a country last changed its rules gets that country's rules as they were then. Moscow in July 2013 reads UTC+4; Moscow now reads UTC+3.

Why does the converted time sometimes show +1 day?

Because the same instant is a different date in different places. When it is 22:00 in London it is already tomorrow in Tokyo, and a list that showed only the hour would be wrong half the time. The marker appears whenever the date differs from the reference zone.

What happens on the night the clocks change?

One hour disappears in spring and one hour repeats in autumn. A time in the missing hour never existed, so it resolves forward to the same wall clock after the change - asking for 02:30 on the night US clocks go forward gives you 03:30. A time in the repeated hour has two answers, and this returns the first, the one still on summer time.

Are half-hour and quarter-hour zones supported?

Yes. India is UTC+5:30, Nepal is UTC+5:45, and parts of Australia and Canada are on half-hour offsets. They are handled the same way as whole-hour zones because the offsets come from the same database.

Why does the abbreviation sometimes look like GMT+4 instead of a name?

Not every zone has a letter code. Where one exists your browser shows it - EST, JST, CET - and where it does not, the numeric form is what the zone actually uses.

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Time Zone Converter

The current time anywhere, and any time converted between zones. Daylight saving is handled from your browser's own time-zone database, so the answer is right on both sides of a clock change.

Reading your time zone…

About this time zone converter

A world clock and a time zone converter in one page. See the live current time in any city, or pin a specific date and time and read it everywhere at once - with daylight saving applied correctly on both sides of a clock change, and a marker when the answer falls on a different day.

How it works

Start from now, or from a time

The clocks tick live by default. Switch to a specific time when you are planning rather than checking - a call, a deadline, a flight.

Set your reference zone

It starts as your own, detected from your browser. The time you type is read as a wall clock in this zone: 3pm means 3pm where you are.

Add the cities you care about

Search over 400 zones by city, region or code. Your list is remembered on this device for next time.

Watch the day marker

When a converted time lands on a different date, the row says so. That is the difference between a clock list that informs and one that quietly misleads.

Privacy

Your time zone is read from your browser and never sent anywhere, and the list of cities you add is stored on your own device. There is no clock server and no location lookup - the conversion uses the time-zone database your browser already ships with.

Counting days rather than converting hours? Use the Date Calculator.

Frequently asked questions

Does this handle daylight saving?: Yes, and historically as well as today. The offsets come from the IANA time-zone database inside your browser rather than from a fixed table, so a date before a country last changed its rules gets that country's rules as they were then. Moscow in July 2013 reads UTC+4; Moscow now reads UTC+3.
Why does the converted time sometimes show +1 day?: Because the same instant is a different date in different places. When it is 22:00 in London it is already tomorrow in Tokyo, and a list that showed only the hour would be wrong half the time. The marker appears whenever the date differs from the reference zone.
What happens on the night the clocks change?: One hour disappears in spring and one hour repeats in autumn. A time in the missing hour never existed, so it resolves forward to the same wall clock after the change - asking for 02:30 on the night US clocks go forward gives you 03:30. A time in the repeated hour has two answers, and this returns the first, the one still on summer time.
Are half-hour and quarter-hour zones supported?: Yes. India is UTC+5:30, Nepal is UTC+5:45, and parts of Australia and Canada are on half-hour offsets. They are handled the same way as whole-hour zones because the offsets come from the same database.
Why does the abbreviation sometimes look like GMT+4 instead of a name?: Not every zone has a letter code. Where one exists your browser shows it - EST, JST, CET - and where it does not, the numeric form is what the zone actually uses.

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