Convert CT to GMT
Central Time (CT) to Greenwich Mean Time (GMT)
When it's 12:00 PM in Chicago, it's 5:00 PM GMT
On Jan 1 – Mar 7, 2026; Nov 1, 2026 – Mar 13, 2027; Nov 7 – Dec 31, 2027: 6:00 PM GMT.
Interactive Converter
Pick any time and date to convert between CT and GMT.
CT to GMT Conversion Table
Full 24-hour comparison. Business hours (9 AM -- 6 PM) are highlighted.
| Chicago (CT) | GMT (GMT) |
|---|---|
| 12:00 AM | 5:00 AM |
| 1:00 AM | 6:00 AM |
| 2:00 AM | 7:00 AM |
| 3:00 AM | 8:00 AM |
| 4:00 AM | 9:00 AM |
| 5:00 AM | 10:00 AM |
| 6:00 AM | 11:00 AM |
| 7:00 AM | 12:00 PM |
| 8:00 AM | 1:00 PM |
| 9:00 AM | 2:00 PM |
| 10:00 AM | 3:00 PM |
| 11:00 AM | 4:00 PM |
| 12:00 PM | 5:00 PM |
| 1:00 PM | 6:00 PM |
| 2:00 PM | 7:00 PM |
| 3:00 PM | 8:00 PM |
| 4:00 PM | 9:00 PM |
| 5:00 PM | 10:00 PM |
| 6:00 PM | 11:00 PM |
| 7:00 PM | 12:00 AM +1 day |
| 8:00 PM | 1:00 AM +1 day |
| 9:00 PM | 2:00 AM +1 day |
| 10:00 PM | 3:00 AM +1 day |
| 11:00 PM | 4:00 AM +1 day |
These times apply on all dates in 2026–2027 except:
- Jan 1 – Mar 7, 2026; Nov 1, 2026 – Mar 13, 2027; Nov 7 – Dec 31, 2027: GMT times are 1 hour later.
Best Meeting Window
Top meeting times for teams in CT and GMT (9 AM -- 6 PM work hours, 1-hour meeting).
All members within working hours. Everyone in mid-day range.
All members within working hours. Everyone in mid-day range.
All members within working hours. Everyone in mid-day range.
These times apply on all dates in 2026–2027 except:
- Jan 1 – Mar 7, 2026; Nov 1, 2026 – Mar 13, 2027; Nov 7 – Dec 31, 2027: GMT times are 1 hour later.
Time Difference & DST
The CT to GMT gap is +5h or +6h, depending on daylight saving time. The table lists each period.
| Dates | Chicago | GMT | Difference |
|---|---|---|---|
| Jan 1 – Mar 7, 2026 | UTC-6 | UTC±0 | +6h |
| Mar 8 – Oct 31, 2026 | UTC-5 | UTC±0 | +5h |
| Nov 1, 2026 – Mar 13, 2027 | UTC-6 | UTC±0 | +6h |
| Mar 14 – Nov 6, 2027 | UTC-5 | UTC±0 | +5h |
| Nov 7 – Dec 31, 2027 | UTC-6 | UTC±0 | +6h |
GMT does not use daylight saving time.
UK clocks use BST (UTC+1) from the last Sunday in March to the last Sunday in October.
Use the interactive converter for a specific date.
Major Cities
Central Time (CT)
- Chicago
- Dallas
- Houston
Greenwich Mean Time (GMT)
- GMT
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