CST to GMT Converter and Time Difference
GMT is 6 hours ahead of CST.
Best meeting time
Everyone is in working hours from 9:00 AM to 11:00 AM (Chicago time).
Working hours are 9 AM to 5 PM in each city. Times are for Friday, 6 November 2026.
CST 6 AM to 10 PM in GMT
Each row is a time in Central Time (CST/CDT) and the matching time in Greenwich Mean Time.
| CST | GMT | Day | Fit |
|---|---|---|---|
| 6:00 AM | 12:00 PM | Same day | Outside working hours |
| 7:00 AM | 1:00 PM | Same day | Early or late for one city |
| 8:00 AM | 2:00 PM | Same day | Early or late for one city |
| 9:00 AM | 3:00 PM | Same day | Both in working hours |
| 10:00 AM | 4:00 PM | Same day | Both in working hours |
| 11:00 AM | 5:00 PM | Same day | Early or late for one city |
| 12:00 PM | 6:00 PM | Same day | Early or late for one city |
| 1:00 PM | 7:00 PM | Same day | Early or late for one city |
| 2:00 PM | 8:00 PM | Same day | Early or late for one city |
| 3:00 PM | 9:00 PM | Same day | Outside working hours |
| 4:00 PM | 10:00 PM | Same day | Outside working hours |
| 5:00 PM | 11:00 PM | Same day | Outside working hours |
| 6:00 PM | 12:00 AM | +1 | Outside working hours |
| 7:00 PM | 1:00 AM | +1 | Outside working hours |
| 8:00 PM | 2:00 AM | +1 | Outside working hours |
| 9:00 PM | 3:00 AM | +1 | Outside working hours |
| 10:00 PM | 4:00 AM | +1 | Outside working hours |
Each row is a time in Central Time (CST/CDT) and the matching time in Greenwich Mean Time.
GMT 6 AM to 10 PM in CST
The same comparison in the other direction: each row is a time in Greenwich Mean Time and the matching time in Central Time (CST/CDT).
| GMT | CST | Day | Fit |
|---|---|---|---|
| 6:00 AM | 12:00 AM | Same day | Outside working hours |
| 7:00 AM | 1:00 AM | Same day | Outside working hours |
| 8:00 AM | 2:00 AM | Same day | Outside working hours |
| 9:00 AM | 3:00 AM | Same day | Outside working hours |
| 10:00 AM | 4:00 AM | Same day | Outside working hours |
| 11:00 AM | 5:00 AM | Same day | Outside working hours |
| 12:00 PM | 6:00 AM | Same day | Outside working hours |
| 1:00 PM | 7:00 AM | Same day | Early or late for one city |
| 2:00 PM | 8:00 AM | Same day | Early or late for one city |
| 3:00 PM | 9:00 AM | Same day | Both in working hours |
| 4:00 PM | 10:00 AM | Same day | Both in working hours |
| 5:00 PM | 11:00 AM | Same day | Early or late for one city |
| 6:00 PM | 12:00 PM | Same day | Early or late for one city |
| 7:00 PM | 1:00 PM | Same day | Early or late for one city |
| 8:00 PM | 2:00 PM | Same day | Early or late for one city |
| 9:00 PM | 3:00 PM | Same day | Outside working hours |
| 10:00 PM | 4:00 PM | Same day | Outside working hours |
Each row is a time in Greenwich Mean Time and the matching time in Central Time (CST/CDT).
Daylight saving and this time difference
Only CST uses daylight saving time, so the gap changes twice a year when its clocks move.
UTC offsets right now: CST is UTCUTC-6, and GMT is UTCUTC on Friday, 6 November 2026. Check the date of your meeting in the planner, since the gap can change for a few weeks each year.
To compare more than two cities, open the meeting planner. To see the gap between any two cities, try the time difference calculator.
Related conversions
Frequently asked questions
What is the time difference between CST and GMT?
GMT is 6 hours ahead of CST. The comparison uses Friday, 6 November 2026, so the result is correct for that date.
When is the best time for a meeting between CST and GMT?
Everyone is in working hours from 9:00 AM to 11:00 AM (Chicago time).
Does the time difference between CST and GMT change with daylight saving?
Only CST uses daylight saving time, so the gap changes twice a year when its clocks move.