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Zone to zone

GMT to CST — Central Time is 6 hours behind

Central Time (CST) is 6 hours behind of Greenwich Mean Time (GMT) while both are on standard time. The gap stays the same throughout the year, which makes this one of the easier pairs to schedule against.

Standard time

6 hours behind

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

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How the two zones line up

Greenwich Mean Time sits at UTC+0 in winter and UTC+1 in summer. Central Time sits at UTC−6 and UTC−5 respectively. The difference between those two offsets is the number you add or subtract.

Daylight saving

There are a few hours of shared working time. Booking towards the start of the later zone's day usually suits everybody.

Where this conversion gets used

  • US client meetings
  • Wall Street open
  • webinar scheduling
  • support coverage into the American afternoon

GMT to CST — every hour

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

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

Questions people ask

6 hours behind, and that does not change during the year.

Related conversions

CET to PSTCST to CETCST to GMTMST to GMT

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