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Zone to zone

UTC to GMT — Greenwich Mean Time is the same time

Greenwich Mean Time (GMT) is the same time of Coordinated Universal Time (UTC) while both are on standard time. Once daylight saving starts the gap becomes 1 hour ahead, 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 ahead

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

Coordinated Universal Time sits at UTC+0 in winter and does not observe daylight saving. Greenwich Mean Time sits at UTC+0 and UTC+1 respectively. 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

  • Server logs
  • scheduled jobs
  • incident post-mortems
  • release windows

UTC to GMT — every hour

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

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

Questions people ask

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

Related conversions

EST to UTCUTC to CETUTC to CSTUTC to MST

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