GMT to CST Time Converter
Convert Greenwich Mean Time to Central Time instantly.
Scroll the timeline to check any hour of the day.
Greenwich Mean Time
GMT
6:06
Central Time
CST
1:06
CST is on daylight savings (CDT) right now, while GMT stays at UTC+0 all year.
Search any city, build a custom world clock, and plan across more time zones and options in the FlutterTime app. Free.
How the GMT to CST time difference works
CST is 5 hours behind GMT. Greenwich Mean Time (GMT) is the fixed UTC+0 reference time, used by the United Kingdom and Ireland in winter. Central Time (CST) is the US Central time zone. For example, 9:00 AM GMT is 4:00 AM CST. Scroll the timeline above to convert any moment, or use the chart below for a quick reference.
Time difference
5 hours
Daylight saving
CST only
GMT offset
UTC+0
CST offset
UTC-6
GMT to CST conversion chart
| Greenwich Mean Time (GMT) | Central Time (CST) |
|---|---|
| 12:00 AM | 7:00 PM -1 day |
| 1:00 AM | 8:00 PM -1 day |
| 2:00 AM | 9:00 PM -1 day |
| 3:00 AM | 10:00 PM -1 day |
| 4:00 AM | 11:00 PM -1 day |
| 5:00 AM | 12:00 AM |
| 6:00 AM | 1:00 AM |
| 7:00 AM | 2:00 AM |
| 8:00 AM | 3:00 AM |
| 9:00 AM | 4:00 AM |
| 10:00 AM | 5:00 AM |
| 11:00 AM | 6:00 AM |
| 12:00 PM | 7:00 AM |
| 1:00 PM | 8:00 AM |
| 2:00 PM | 9:00 AM |
| 3:00 PM | 10:00 AM |
| 4:00 PM | 11:00 AM |
| 5:00 PM | 12:00 PM |
| 6:00 PM | 1:00 PM |
| 7:00 PM | 2:00 PM |
| 8:00 PM | 3:00 PM |
| 9:00 PM | 4:00 PM |
| 10:00 PM | 5:00 PM |
| 11:00 PM | 6:00 PM |
Best time to meet
A standard 9 to 5 workday overlaps from 2:00 PM to 5:00 PM GMT (9:00 AM to 12:00 PM CST). Schedule inside that window to catch both coasts during business hours.
Cities in each time zone
Greenwich Mean Time (GMT)
LondonDublinLisbonEdinburghManchester
Central Time (CST)
ChicagoHoustonDallasAustinNew OrleansMinneapolis
GMT to CST questions
Is CST ahead of or behind GMT?
CST is 5 hours behind GMT. So 9:00 AM GMT is 4:00 AM CST, and 5:00 PM GMT is 12:00 PM CST.
What time is it in CST when it is 12:00 PM GMT?
When it is 12:00 PM (noon) GMT in Greenwich Mean Time, it is 7:00 AM CST in Central Time.
How many hours difference is there between GMT and CST?
There is a 5 hours difference. Central Time (CST) runs 5 hours behind Greenwich Mean Time (GMT).
Do GMT and CST observe daylight saving time?
Central Time observes daylight saving time but Greenwich Mean Time does not, so the difference between them changes by an hour twice a year. The United Kingdom and Ireland use GMT only in winter; from late March to late October they switch to British Summer Time (BST), one hour ahead of GMT.
What is the best time to schedule a meeting between GMT and CST?
A standard 9-to-5 workday overlaps from 2:00 PM to 5:00 PM GMT (9:00 AM to 12:00 PM CST). Scheduling inside that window keeps the call during business hours in both Greenwich Mean Time and Central Time.
Which cities use GMT and CST?
Greenwich Mean Time (GMT) covers cities such as London, Dublin, Lisbon, Edinburgh, Manchester. Central Time (CST) covers cities such as Chicago, Houston, Dallas, Austin, New Orleans, Minneapolis.