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Time Zone Converter

Convert meeting times across time zones.

Use the Time Zone Converter tool

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What this time zone converter does

Time Zone Converter takes a date and time in one IANA zone and shows the same instant in another. It displays each zone's offset at that instant, so a daylight-saving transition does not quietly shift a meeting by an hour.

The zone database is the one built into your browser. It includes historical and future daylight-saving rules; current offsets are shown separately because they can differ from the offset on the converted date.

Why use it

  • Schedule a call with someone in another country.
  • Check whether a deadline in UTC falls on the same local day.
  • See the current time and offset in two zones at once.

How to use it

  1. 1Pick the date and wall-clock time.
  2. 2Choose the source and target zones.
  3. 3Read both local times and the offset difference.

Worked examples

India to UTC

Input

2026-11-10 09:00 Asia/Kolkata → UTC

Output

03:30 UTC on the same day · difference −5.5 hours

New York to London

Input

2026-07-15 09:00 America/New_York → Europe/London

Output

14:00 in London, when both are on daylight time

Common mistakes

  • Using a fixed UTC offset and ignoring daylight saving on the chosen date.
  • Confusing the offset now with the offset on a future date.
  • Assuming a zone abbreviation such as IST is unambiguous; it can mean several zones.

Frequently asked questions

Which zone names are supported?
IANA names such as Europe/London and Asia/Kolkata. The list comes from your browser and includes several hundred zones.
Does it handle daylight saving?
Yes. The offset is calculated for the specific instant, so a date in summer reflects summer time.
Why is the difference shown as a decimal?
Some zones have 30- or 45-minute offsets. A difference of −5.5 hours means five and a half hours behind.

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