Time zone list
Date & timeWhat is the UTC offset of every time zone?
Every IANA time zone with its UTC offset now, in winter and in summer, searchable by place.
Time and place
What you enter stays on your device while you use this tool. Opening a shared link sends the settings in its address to HowToolbox to prepare the page.
Loading…
Time there
––:––
Sponsored Links
All time zones
UTC offsets now, in winter and in summer, from the time zone database of this browser, west to east.
| IANA time zone | Offset now | Winter (standard) | Summer |
|---|
Every IANA time zone with its UTC offset now, in winter and in summer, searchable by place.
How to use
- Type the time on the 24-hour clock, or leave it empty to use the time now.
- Pick the time zone that time is in; this device's zone is chosen first.
- Add the places you want to see, and the date if it is not today.
- Read the time in every place; the table shows each offset and how many hours ahead or behind it is.
Local times at 12:00 UTC on 15 January 2026
How it works
Every place keeps its clock a set amount ahead of or behind Coordinated Universal Time (UTC), the world's reference time. That amount is the offset: Helsinki is UTC+2 in winter, New York UTC−5, India UTC+5:30. To convert, the time is first turned into UTC and then into each other place's local time.
The rule is local time = UTC + offset. For example, 14:30 in Helsinki on 1 July is 11:30 UTC, because Finnish summer time is UTC+3; New York is UTC−4 in summer, so it is 07:30 there, 7 hours behind. Offsets change when a place starts or ends daylight saving time, and the dates differ between countries: in late March the gap between Finland and New York is 6 hours for about three weeks.
The offsets come from the IANA time zone database, the public record of every region's clock rules, as it is built into your browser. When clocks go back, one hour happens twice and the first one is used; when clocks go forward, one hour does not exist and the time is read with the offset before the change. Future rules can change if a government changes them.
Sponsored Links
Frequently asked questions
What is an IANA time zone name?
A name like Europe/Helsinki or America/New_York from the IANA time zone database. Computers use these names because one name keeps a region's whole history of offsets and daylight saving rules.
Why do some zones show no summer offset?
Those places keep the same offset all year. Most of Asia and Africa, for example, do not use daylight saving time.
Next you might need
- Meeting plannerPick two to six places and a day to see an hour grid, working hours and the best time for everyone., private, runs on your deviceDate & timeCalculatorReference
- Daylight saving time changesThe next and previous clock change in any time zone, whether the clocks go forward or back, and every change of a year., private, runs on your deviceDate & timeReference
- Flight arrival timeThe local landing time from the departure time and the hours in the air, across time zones, daylight saving time and the date line., private, runs on your deviceEverydayCalculatorFlying
- Day of the weekThe weekday of any date, and how many days ago or ahead it is., private, runs on your deviceDate & timeCalculatorReference
- Decimal hours converterHours and minutes to decimal hours and back, and the total of a timesheet in both., private, runs on your deviceDate & timeConverterCalculatorSalary
- Full-screen clockAn easy-to-read clock for your desk or the whole room., private, runs on your deviceDate & timeReference
More in Date & time
All 25 utilities in Date & time- Countdown timerA little time, clearly counted., private, runs on your device
- Exact ageYour age in years, months and days, the totals and your next birthday., private, runs on your device
- Date differenceCalendar days, full months and Finnish working days., private, runs on your device
- StopwatchStart, lap, stop: every split kept., private, runs on your device
- Chess clockTwo chess clocks with increment or delay, a move counter and a flag at zero., private, runs on your device
- CountdownDays, hours, minutes and seconds to any date and time, or to the next New Year, Christmas or Midsummer, live and full screen., private, runs on your device
Popular now
Sponsored Links
Sponsored Links
Sponsored Links