Time zone conversion

CST to GMT time converter

Convert Central Standard Time to Greenwich Mean Time for a specific date and time. The result uses the stated fixed offset for CST and the stated fixed offset for GMT.

New York-
Shanghai-

CST nowThu, 8:34 PM GMT-6UTC-06:00
GMT nowFri, 2:34 AM UTCUTC+00:00
Current differenceGMT is 6 hours ahead of CSTOffsets can change when a city observes daylight saving time.

24-hour reference

CST to GMT time table

This table uses Thursday, July 30, 2026 in CST. Choose another date in the converter above when daylight saving rules may differ.

CSTGMT
12:00 AMThu 6:00 AM
1:00 AMThu 7:00 AM
2:00 AMThu 8:00 AM
3:00 AMThu 9:00 AM
4:00 AMThu 10:00 AM
5:00 AMThu 11:00 AM
6:00 AMThu 12:00 PM
7:00 AMThu 1:00 PM
8:00 AMThu 2:00 PM
9:00 AMThu 3:00 PM
10:00 AMThu 4:00 PM
11:00 AMThu 5:00 PM
12:00 PMThu 6:00 PM
1:00 PMThu 7:00 PM
2:00 PMThu 8:00 PM
3:00 PMThu 9:00 PM
4:00 PMThu 10:00 PM
5:00 PMThu 11:00 PM
6:00 PMFri 12:00 AM
7:00 PMFri 1:00 AM
8:00 PMFri 2:00 AM
9:00 PMFri 3:00 AM
10:00 PMFri 4:00 AM
11:00 PMFri 5:00 AM

Meeting planner

Working-hour overlap

2 hours in this reference day fall between 9:00 AM and 5:00 PM in both locations.

The first shared working-hour row is 9:00 AM CST, which is Thu 3:00 PM GMT. Green rows in the table mark the full overlap.

Offset rules used

CST is fixed at UTC-06:00 and does not move forward for daylight saving time.

GMT is represented here as the fixed UTC+00:00 civil-time offset.

From time zone

About Central Standard Time

CST is fixed at UTC-06:00 and does not move forward for daylight saving time.

IANA identifier: Etc/GMT+6

To time zone

About Greenwich Mean Time

GMT is represented here as the fixed UTC+00:00 civil-time offset.

IANA identifier: UTC

Related routes

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Accuracy

Date-aware time conversion

Offsets are resolved for the local date entered, rather than treating the current offset as permanent. This matters around daylight saving transitions and when locations change rules on different dates.

The converter uses the IANA time-zone database available in the browser. A local clock time skipped during a spring-forward transition is reported as invalid instead of silently changing the requested time.

Questions

CST to GMT FAQ

What is the time difference from CST to GMT?

GMT is currently 6 hours ahead of CST. City offsets can change with daylight saving time, so use the date-specific converter for another date.

How do I convert CST time to GMT?

Choose the local date and time in CST. The converter resolves that wall-clock time with Etc/GMT+6, then formats the same instant in UTC.

Does CST to GMT change with daylight saving time?

No. Both selections are fixed UTC offsets, so their difference remains constant.