GMT to CST Converter
CST is 5 hours behind GMT for most of the year. The gap changes for a few weeks a year because the two places switch to daylight saving time on different dates.
CST to GMT insteadTime difference between GMT and CST
CST is 5 hours behind GMT for most of the year.
- 2026: CST is 6 hours behind GMT from Jan 1 – Mar 7, 2026, Nov 1 – Dec 31, 2026.
- 2027: CST is 6 hours behind GMT from Jan 1 – Mar 13, 2027, Nov 7 – Dec 31, 2027.
GMT to CST conversion table
| GMT | CSTMost of the year | CSTJan 1 – Mar 7, 2026, Nov 1 – Dec 31, 2026 |
|---|---|---|
| 12 AM | 7 PM−1 day | 6 PM−1 day |
| 1 AM | 8 PM−1 day | 7 PM−1 day |
| 2 AM | 9 PM−1 day | 8 PM−1 day |
| 3 AM | 10 PM−1 day | 9 PM−1 day |
| 4 AM | 11 PM−1 day | 10 PM−1 day |
| 5 AM | 12 AM | 11 PM−1 day |
| 6 AM | 1 AM | 12 AM |
| 7 AM | 2 AM | 1 AM |
| 8 AM | 3 AM | 2 AM |
| 9 AM | 4 AM | 3 AM |
| 10 AM | 5 AM | 4 AM |
| 11 AM | 6 AM | 5 AM |
| 12 PM | 7 AM | 6 AM |
| 1 PM | 8 AM | 7 AM |
| 2 PM | 9 AM | 8 AM |
| 3 PM | 10 AM | 9 AM |
| 4 PM | 11 AM | 10 AM |
| 5 PM | 12 PM | 11 AM |
| 6 PM | 1 PM | 12 PM |
| 7 PM | 2 PM | 1 PM |
| 8 PM | 3 PM | 2 PM |
| 9 PM | 4 PM | 3 PM |
| 10 PM | 5 PM | 4 PM |
| 11 PM | 6 PM | 5 PM |
Best time to meet
Working hours (9 AM – 5 PM) overlap for 3 hours: 2 PM – 5 PM GMT (9 AM – 12 PM CST). That window is the best time for calls and meetings.
Frequently asked questions
What time is it in CST when it's 9 AM in GMT?
4 AM for most of the year. CST is 5 hours behind GMT.
How many hours is CST behind GMT?
Usually 5 hours. The gap changes for a few weeks a year because daylight saving time starts and ends on different dates: 2026: CST is 6 hours behind GMT from Jan 1 – Mar 7, 2026, Nov 1 – Dec 31, 2026. 2027: CST is 6 hours behind GMT from Jan 1 – Mar 13, 2027, Nov 7 – Dec 31, 2027.
Does GMT use daylight saving time?
No. Greenwich Mean Time stays at UTC+0 all year.
Does CST use daylight saving time?
Yes. Central Time is UTC−6 (CST) in January and UTC−5 (CDT) in July. Mar 8, 2026: clocks go forward to UTC−5; Nov 1, 2026: clocks go back to UTC−6.
When is the best time to schedule a meeting between GMT and CST?
Working hours (9 AM – 5 PM) overlap for 3 hours: 2 PM – 5 PM GMT (9 AM – 12 PM CST). That window is the best time for calls and meetings.
Which CST does this page use?
Here CST means US Central Time (UTC−6, CDT UTC−5 in summer), not China Standard Time. For China, see the Beijing pages.