GMT to CST converter
GMT never changes for daylight saving time, but Central Time does, so the gap moves by an hour twice a year. The table below always shows the right one for your date.
Convert Greenwich Mean Time (GMT) to Central Standard Time (CST) for any date and time.
Central Time is 5 hours behind GMT from March to November, and 6 hours behind the rest of the year.
Right now GMT is UTC+0 and Central Time is on CDT (UTC−5). Central Time switches back to standard time on 1 November 2026.
US clocks go back on 1 November 2026. From then, CST is 6 hours behind GMT.
9:00 am to 5:00 pm GMT is 4:00 am to 12:00 pm CDT.
- 8:00 am GMT is 3:00 am CDT
- 9:00 am GMT is 4:00 am CDT
- 10:00 am GMT is 5:00 am CDT
- 12:00 pm GMT is 7:00 am CDT
- 3:00 pm GMT is 10:00 am CDT
- 5:00 pm GMT is 12:00 pm CDT
Hours in Greenwich Mean Time, Fri, Oct 23
Greenwich Mean Time
UTC+0 all year; the UK switches to BST in summer
Fri, Oct 23
GMT · UTC+0ReferenceWorking hoursCentral Time
US, Canada & Mexico
Fri, Oct 23
CDT · UTC−5−5h from Greenwich Mean TimeOutside working hours
Best time to meet: 2:00 PM–5:00 PM in Greenwich Mean Time on Fri, Oct 23, when everyone is inside working hours.
Book a meeting in this windowWorking hours: 9:00 AM–5:00 PM, Monday to FridayEveryone at work
GMT to CST conversion table
Every hour of the day in GMT, converted to CDT. Shaded cells are working hours (9:00 am to 5:00 pm); green rows are working hours in both zones.
| GMT | CDTUntil 1 November 2026; From 14 March 2027 | CST1 November 2026 to 14 March 2027 |
|---|---|---|
| 12:00 am GMT | 7:00 pm CDT(day before) | 6:00 pm CST(day before) |
| 1:00 am GMT | 8:00 pm CDT(day before) | 7:00 pm CST(day before) |
| 2:00 am GMT | 9:00 pm CDT(day before) | 8:00 pm CST(day before) |
| 3:00 am GMT | 10:00 pm CDT(day before) | 9:00 pm CST(day before) |
| 4:00 am GMT | 11:00 pm CDT(day before) | 10:00 pm CST(day before) |
| 5:00 am GMT | 12:00 am CDT | 11:00 pm CST(day before) |
| 6:00 am GMT | 1:00 am CDT | 12:00 am CST |
| 7:00 am GMT | 2:00 am CDT | 1:00 am CST |
| 8:00 am GMT | 3:00 am CDT | 2:00 am CST |
| 9:00 am GMT | 4:00 am CDT | 3:00 am CST |
| 10:00 am GMT | 5:00 am CDT | 4:00 am CST |
| 11:00 am GMT | 6:00 am CDT | 5:00 am CST |
| 12:00 pm GMT | 7:00 am CDT | 6:00 am CST |
| 1:00 pm GMT | 8:00 am CDT | 7:00 am CST |
| 2:00 pm GMT | 9:00 am CDT | 8:00 am CST |
| 3:00 pm GMT | 10:00 am CDT | 9:00 am CST |
| 4:00 pm GMT | 11:00 am CDT | 10:00 am CST |
| 5:00 pm GMT | 12:00 pm CDT | 11:00 am CST |
| 6:00 pm GMT | 1:00 pm CDT | 12:00 pm CST |
| 7:00 pm GMT | 2:00 pm CDT | 1:00 pm CST |
| 8:00 pm GMT | 3:00 pm CDT | 2:00 pm CST |
| 9:00 pm GMT | 4:00 pm CDT | 3:00 pm CST |
| 10:00 pm GMT | 5:00 pm CDT | 4:00 pm CST |
| 11:00 pm GMT | 6:00 pm CDT | 5:00 pm CST |
Best times to meet
Your working hours overlap for 3 hours, from 2:00 pm GMT (9:00 am CDT) to 5:00 pm GMT (12:00 pm CDT). That's the best window for a meeting.
About these time zones
GMT: Greenwich Mean Time
Greenwich Mean Time is UTC+0.
The same time as UTC. The UK, Ireland and Portugal use GMT in winter, then switch to summer time (BST in the UK) from late March to late October. Iceland and much of West Africa stay on GMT all year.
CST: Central Standard Time
Central Standard Time is UTC−6. CST is also used for China Standard Time (UTC+8) and Cuba Standard Time (UTC−5). This page converts North American Central Time.
Texas, Illinois, Minnesota, Louisiana and most of the Midwest and South, plus Manitoba in Canada. Saskatchewan and most of Mexico stay on CST all year. CT is the short form for the whole zone.
Most places on Central Time are on CDT (UTC−5) right now, not CST. People still say "CST" all year, so the times on this page follow the clocks and show CDT until 1 November 2026.
How the difference changes
Right now CDT is 5 hours behind GMT. From 1 November 2026, when US clocks go back, the difference becomes 6 hours. From 14 March 2027, when US clocks go forward, the difference becomes 5 hours.