Time Zone Converter
Convert a date and time from one time zone to another, with daylight saving shown.
Date & Time
Time zones
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Zones and daylight saving
- Real time zones: Choose a city or zone (Vienna, New York, Asia/Tokyo). The rules and their history come from the time zone data built into your browser, not from a table on this page.
- Times that do not exist: When clocks jump forward, a time like 02:30 is skipped. The page says so and shows both readings instead of moving the time silently.
- Times that happen twice: When clocks go back, 02:30 occurs twice. Both are shown, an hour apart.
- The day can change: Evening in Vienna is the next morning in Tokyo; the result says when it is the day before or after.
Frequently asked questions
Why is the difference between two cities not always the same?
They change to and from daylight saving on different dates, or not at all, so for some weeks of the year the gap is an hour shorter or longer.
Can it plan a meeting across several zones?
Not yet. It converts one date and time from one zone to another.