CST to GMT time difference
Right now UK is 6 hours ahead of US Central Time: when it is 9:00 AM in US Central Time (CDT), it is 3:00 PM in UK (BST). The difference is not fixed. US Central Time and UK change the clocks twice a year, so from October 25, 2026 the gap becomes 5 hours, and from November 2, 2026 it goes back to 6 hours.
CT, CST and CDT
CT means Central Time, whatever the season. It is CST (Central Standard Time, UTC-6) from early November to mid-March and CDT (Central Daylight Time, UTC-5) the rest of the year. Today it is CDT. People often write "EST" all year when they mean Eastern Time; the times on this page are correct either way.
CST to GMT conversion table
Every hour of the day in US Central Time and the matching time in UK, for today, October 13, 2026.
| CST (US Central Time) | GMT (UK) |
|---|---|
| 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 | 12:00 AM (next day) |
| 7:00 PM | 1:00 AM (next day) |
| 8:00 PM | 2:00 AM (next day) |
| 9:00 PM | 3:00 AM (next day) |
| 10:00 PM | 4:00 AM (next day) |
| 11:00 PM | 5:00 AM (next day) |
Scheduling tips
With a gap of 6 hours there are a few shared working hours each day. Plan meetings for the morning of the place that is behind. When you share a time, write the zone with it, such as "9:00 AM CST", and remember that a time near midnight can fall on a different date on the other side.
Reverse: GMT to CST. Other converters: CST to PKT · PKT to GMT · CST to EST · EST to GMT · CST to MST · CST to PST · any time zone to your time
Frequently asked questions
What is the time difference between CST and GMT?
Right now UK is 6 hours ahead of US Central Time. The gap changes to 5 hours on October 25, 2026 when daylight saving time starts or ends.
What time is it in UK when it is 9 AM in US Central Time?
3:00 PM.
What is 8 PM CST in GMT?
2:00 AM (next day) BST.
Does the CST to GMT difference change during the year?
Yes. One or both places use daylight saving time, so the gap changes on October 25, 2026 and November 2, 2026.
How do I convert CST to GMT?
Enter the CST time and date at the top. The converter applies the difference for that date, including daylight saving time.
What is 12 PM CST in GMT?
6:00 PM today.
What is 6 PM CST in GMT?
12:00 AM today.
What is the best time for a call between US Central Time and UK?
Pick a time that is in working hours in both places; the hour-by-hour table on this page shows both clocks side by side.