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 Central Standard Time (CST) to Greenwich Mean Time (GMT) for any date and time.
GMT is 5 hours ahead of Central Time from March to November, and 6 hours ahead the rest of the year.
Right now Central Time is on CST (UTC−6) and GMT is UTC+0. Central Time switches to daylight saving time on 14 March 2027.
9:00 am to 5:00 pm CST is 3:00 pm to 11:00 pm GMT.
Central TimeReference
US, Canada & Mexico
Tue, Nov 3
Greenwich Mean Time
UTC+0 all year; the UK switches to BST in summer
Wed, Nov 4Next day
Best time to meet 9:00 AM–11:00 AM in Central Time on Tue, Nov 3, 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 CST, converted to GMT. Hatched cells are working hours (9:00 am to 5:00 pm); rows with the accent bar are working hours in both zones.
| CST / CDT | GMT (with CST)Until 14 March 2027 | GMT (with CDT)From 14 March 2027 |
|---|---|---|
| 12:00 am | 6:00 am GMT | 5:00 am GMT |
| 1:00 am | 7:00 am GMT | 6:00 am GMT |
| 2:00 am | 8:00 am GMT | 7:00 am GMT |
| 3:00 am | 9:00 am GMT | 8:00 am GMT |
| 4:00 am | 10:00 am GMT | 9:00 am GMT |
| 5:00 am | 11:00 am GMT | 10:00 am GMT |
| 6:00 am | 12:00 pm GMT | 11:00 am GMT |
| 7:00 am | 1:00 pm GMT | 12:00 pm GMT |
| 8:00 am | 2:00 pm GMT | 1:00 pm GMT |
| 9:00 am | 3:00 pm GMT | 2:00 pm GMT |
| 10:00 am | 4:00 pm GMT | 3:00 pm GMT |
| 11:00 am | 5:00 pm GMT | 4:00 pm GMT |
| 12:00 pm | 6:00 pm GMT | 5:00 pm GMT |
| 1:00 pm | 7:00 pm GMT | 6:00 pm GMT |
| 2:00 pm | 8:00 pm GMT | 7:00 pm GMT |
| 3:00 pm | 9:00 pm GMT | 8:00 pm GMT |
| 4:00 pm | 10:00 pm GMT | 9:00 pm GMT |
| 5:00 pm | 11:00 pm GMT | 10:00 pm GMT |
| 6:00 pm | 12:00 am GMT(next day) | 11:00 pm GMT |
| 7:00 pm | 1:00 am GMT(next day) | 12:00 am GMT(next day) |
| 8:00 pm | 2:00 am GMT(next day) | 1:00 am GMT(next day) |
| 9:00 pm | 3:00 am GMT(next day) | 2:00 am GMT(next day) |
| 10:00 pm | 4:00 am GMT(next day) | 3:00 am GMT(next day) |
| 11:00 pm | 5:00 am GMT(next day) | 4:00 am GMT(next day) |
Your working hours overlap for 2 hours, from 9:00 am CST (3:00 pm GMT) to 11:00 am CST (5:00 pm GMT). That's the best window for a meeting.
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.
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.