GMT to CST Converter
CST is 6 hours behind GMT
GMT to CST Conversion Table
Green rows indicate standard business hours (9 AM – 5 PM) in CST
| GMT | CST |
|---|---|
| 12:00 AM | 6:00 PM -1d |
| 1:00 AM | 7:00 PM -1d |
| 2:00 AM | 8:00 PM -1d |
| 3:00 AM | 9:00 PM -1d |
| 4:00 AM | 10:00 PM -1d |
| 5:00 AM | 11:00 PM -1d |
| 6:00 AM | 12:00 AM |
| 7:00 AM | 1:00 AM |
| 8:00 AM | 2:00 AM |
| 9:00 AM | 3:00 AM |
| 10:00 AM | 4:00 AM |
| 11:00 AM | 5:00 AM |
| 12:00 PM | 6:00 AM |
| 1:00 PM | 7:00 AM |
| 2:00 PM | 8:00 AM |
| 3:00 PM | 9:00 AM |
| 4:00 PM | 10:00 AM |
| 5:00 PM | 11:00 AM |
| 6:00 PM | 12:00 PM |
| 7:00 PM | 1:00 PM |
| 8:00 PM | 2:00 PM |
| 9:00 PM | 3:00 PM |
| 10:00 PM | 4:00 PM |
| 11:00 PM | 5:00 PM |
Converting Greenwich Mean Time to Central Standard Time
Greenwich Mean Time (GMT) and Central Standard Time (CST) are separated by a 6 hours time difference. CST is 6 hours behind GMT. GMT is UTC+0, used in United Kingdom, Ireland, Portugal, while CST is UTC-6, used in United States, Canada, Mexico.
When converting from GMT to CST, the key reference points to remember are: 9:00 AM GMT equals 3:00 AM CST, 12:00 PM noon GMT equals 6:00 AM CST, and 5:00 PM GMT equals 11:00 AM CST. The conversion table above shows every hour of the day mapped between these two time zones.
Scheduling Across GMT and CST
For professionals scheduling meetings between GMT and CST, finding overlapping business hours is essential. Standard business hours are typically 9:00 AM to 5:00 PM in each time zone. Given the 6 hours difference, the window of overlap may be limited. Use the highlighted working hours in the conversion table above to quickly identify suitable meeting times.
Daylight Saving Time Considerations
GMT observes Daylight Saving Time, switching to BST (UTC+1) during summer months. CST observes DST, switching to CDT (UTC-5). During DST transitions, the time difference between these zones may temporarily change by 1 hour. Always verify the current offset during spring and fall transition periods.