TimeToZone

GMT to CST Converter

CST is 6 hours behind GMT. 9:00 AM GMT = 3:00 AM CST.

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GMTfrom
Greenwich Mean Time
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CST
Central Standard Time
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CST is 6 hours behind GMT at the moment. To convert GMT to CST, subtract 6 hours from the GMT time: 9:00 AM GMT = 3:00 AM CST.

GMT (GMT) is used in Same offset as UTC. The UK and Ireland use GMT in winter; Iceland, Ghana and Senegal all year. CST (Central Time) is used in Chicago, Dallas, Houston, Minneapolis, New Orleans, Winnipeg; Mexico City and Central America use UTC−6 all year.

The UK is on GMT only in winter; in summer it uses BST (UTC+1). CST here means North American Central Standard Time, not China Standard Time.

GMT to CST time conversion table

GMT to CST on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.

GMTCSTDay
12:00 AM GMT6:00 PM CSTprevious day
1:00 AM GMT7:00 PM CSTprevious day
2:00 AM GMT8:00 PM CSTprevious day
3:00 AM GMT9:00 PM CSTprevious day
4:00 AM GMT10:00 PM CSTprevious day
5:00 AM GMT11:00 PM CSTprevious day
6:00 AM GMT12:00 AM CSTnight
7:00 AM GMT1:00 AM CSTnight
8:00 AM GMT2:00 AM CSTnight
9:00 AM GMT3:00 AM CSTnight
10:00 AM GMT4:00 AM CSTnight
11:00 AM GMT5:00 AM CSTnight
12:00 PM GMT6:00 AM CST—
1:00 PM GMT7:00 AM CST—
2:00 PM GMT8:00 AM CST—
3:00 PM GMT9:00 AM CSTwork hours
4:00 PM GMT10:00 AM CSTwork hours
5:00 PM GMT11:00 AM CST—
6:00 PM GMT12:00 PM CST—
7:00 PM GMT1:00 PM CST—
8:00 PM GMT2:00 PM CST—
9:00 PM GMT3:00 PM CST—
10:00 PM GMT4:00 PM CST—
11:00 PM GMT5:00 PM CST—
  • Work rows — 9 AM–5 PM in both places
  • Night in the destination (10 PM–6 AM)

How to convert GMT to CST

Subtract 6 hours from the GMT time to get CST.

Example: 9:00 AM GMT = 3:00 AM CST.

Across midnight: 1:00 AM GMT = 7:00 PM CST (previous day). The date changes, so always check the day as well as the hour.

Time difference between GMT and CST

The time difference between GMT and CST is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:

  • 1 Jan 2026 – 7 Mar 2026: CST is 6 hours behind of GMT.
  • 8 Mar 2026 – 31 Oct 2026: CST is 5 hours behind of GMT.
  • 1 Nov 2026 – 31 Dec 2026: CST is 6 hours behind of GMT.

GMT and CST during daylight saving time

  • GMT does not observe daylight saving time; it stays on UTC+0 all year.
  • CST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from CST (UTC−6) to CDT (UTC−5).

Best time for a meeting between GMT and CST

GMT and CST share 2 hours of the 9 AM–5 PM working day. Any time between 3:00 PM and 5:00 PM GMT lands between 9:00 AM and 11:00 AM CST, inside working hours for both.

Plan a meeting across more time zones.

GMT to CST FAQ

What is the time difference between GMT and CST?

Right now CST is 6 hours behind GMT. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.

What is 9 AM GMT in CST?

9:00 AM GMT is 3:00 AM CST.

What is 12 PM (noon) GMT in CST?

12:00 PM GMT is 6:00 AM CST.

Is CST ahead of or behind GMT?

CST is 6 hours behind GMT, so it is earlier in CST than in GMT.

Does GMT change for daylight saving time?

No. GMT stays on the same offset all year, so conversions never shift for daylight saving time.

Does CST change for daylight saving time?

Yes. CST next changes on 14 Mar 2027, when clocks go forward one hour from CST to CDT.

What is the best time for a meeting between GMT and CST?

GMT and CST share 2 hours of the 9 AM–5 PM working day. Any time between 3:00 PM and 5:00 PM GMT lands between 9:00 AM and 11:00 AM CST, inside working hours for both.

Is CT the same as CST?

CST is the winter (standard) name of Central Time (CT). From March to November the same clocks are called CDT. This converter always uses the one in force on the date you choose.

Related conversions

Convert CST to GMT

Convert GMT to other time zones

Convert other time zones to CST

Learn more

Updated 6 November 2026. Time zone data: IANA tz database.