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 CST (UTC−6). Central Time switches to daylight saving time on 14 March 2027.
9:00 am to 5:00 pm GMT is 3:00 am to 11:00 am CST.
Greenwich Mean TimeReference
UTC+0 all year; the UK switches to BST in summer
Wed, Nov 4
Central Time
US, Canada & Mexico
Tue, Nov 3Previous day
Best time to meet 3:00 PM–5:00 PM in Greenwich Mean Time on Wed, Nov 4, when everyone is inside working hours.
Book a meeting in this windowWorking hours: 9:00 AM–5:00 PM, Monday to FridayEveryone at work
Every hour of the day in GMT, converted to CST. Hatched cells are working hours (9:00 am to 5:00 pm); rows with the accent bar are working hours in both zones.
| GMT | CSTUntil 14 March 2027 | CDTFrom 14 March 2027 |
|---|---|---|
| 12:00 am GMT | 6:00 pm CST(day before) | 7:00 pm CDT(day before) |
| 1:00 am GMT | 7:00 pm CST(day before) | 8:00 pm CDT(day before) |
| 2:00 am GMT | 8:00 pm CST(day before) | 9:00 pm CDT(day before) |
| 3:00 am GMT | 9:00 pm CST(day before) | 10:00 pm CDT(day before) |
| 4:00 am GMT | 10:00 pm CST(day before) | 11:00 pm CDT(day before) |
| 5:00 am GMT | 11:00 pm CST(day before) | 12:00 am CDT |
| 6:00 am GMT | 12:00 am CST | 1:00 am CDT |
| 7:00 am GMT | 1:00 am CST | 2:00 am CDT |
| 8:00 am GMT | 2:00 am CST | 3:00 am CDT |
| 9:00 am GMT | 3:00 am CST | 4:00 am CDT |
| 10:00 am GMT | 4:00 am CST | 5:00 am CDT |
| 11:00 am GMT | 5:00 am CST | 6:00 am CDT |
| 12:00 pm GMT | 6:00 am CST | 7:00 am CDT |
| 1:00 pm GMT | 7:00 am CST | 8:00 am CDT |
| 2:00 pm GMT | 8:00 am CST | 9:00 am CDT |
| 3:00 pm GMT | 9:00 am CST | 10:00 am CDT |
| 4:00 pm GMT | 10:00 am CST | 11:00 am CDT |
| 5:00 pm GMT | 11:00 am CST | 12:00 pm CDT |
| 6:00 pm GMT | 12:00 pm CST | 1:00 pm CDT |
| 7:00 pm GMT | 1:00 pm CST | 2:00 pm CDT |
| 8:00 pm GMT | 2:00 pm CST | 3:00 pm CDT |
| 9:00 pm GMT | 3:00 pm CST | 4:00 pm CDT |
| 10:00 pm GMT | 4:00 pm CST | 5:00 pm CDT |
| 11:00 pm GMT | 5:00 pm CST | 6:00 pm CDT |
Your working hours overlap for 2 hours, from 3:00 pm GMT (9:00 am CST) to 5:00 pm GMT (11:00 am CST). That's the best window for a meeting.
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.
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.