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Zone to zone

GMT to UTC — Coordinated Universal Time is the same time

Coordinated Universal Time (UTC) is the same time of Greenwich Mean Time (GMT) while both are on standard time. Once daylight saving starts the gap becomes 1 hour behind, so any recurring meeting between these two regions moves by an hour twice a year.

Standard time

the same time

Applies while neither zone is on daylight saving — broadly November to March in the northern hemisphere.

Daylight saving

1 hour behind

Applies while the clocks are forward. This pair does not keep a constant gap, so check the date.

Full-day tableQuestions

Convert a time

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Your device reports your local zone. Everything is calculated in your browser.

How the two zones line up

Greenwich Mean Time sits at UTC+0 in winter and UTC+1 in summer. Coordinated Universal Time sits at UTC+0 all year. The difference between those two offsets is the number you add or subtract.

Daylight saving

The two working days overlap almost completely, so any normal meeting slot works for both sides.

Where this conversion gets used

  • Remote team meetings
  • client calls
  • travel planning
  • scheduled deadlines

GMT to UTC — every hour

Both columns are computed from the IANA database, so they follow the real transition dates.

GMTUTC — standardUTC — daylight saving
12:00 am12:00 am11:00 pm (previous day)
1:00 am1:00 am12:00 am
2:00 am2:00 am1:00 am
3:00 am3:00 am2:00 am
4:00 am4:00 am3:00 am
5:00 am5:00 am4:00 am
6:00 am6:00 am5:00 am
7:00 am7:00 am6:00 am
8:00 am8:00 am7:00 am
9:00 am9:00 am8:00 am
10:00 am10:00 am9:00 am
11:00 am11:00 am10:00 am
12:00 pm12:00 pm11:00 am
1:00 pm1:00 pm12:00 pm
2:00 pm2:00 pm1:00 pm
3:00 pm3:00 pm2:00 pm
4:00 pm4:00 pm3:00 pm
5:00 pm5:00 pm4:00 pm
6:00 pm6:00 pm5:00 pm
7:00 pm7:00 pm6:00 pm
8:00 pm8:00 pm7:00 pm
9:00 pm9:00 pm8:00 pm
10:00 pm10:00 pm9:00 pm
11:00 pm11:00 pm10:00 pm

Questions people ask

The same time during standard time, and 1 hour behind while daylight saving is running.

Related conversions

EST to ISTEST to UTCIST to ESTUTC to CET

All conversions →

Booking something recurring?

A fixed clock time drifts when either side changes its clocks. Our guides explain how to stop that happening.

Read the DST guidePlan a meeting