Convert British Summer Time (BST) to Greenwich Mean Time (GMT) instantly. Free, fast and accurate time zone converter with real-time updates.
| BST Time | GMT Time |
|---|---|
| 12:00 AM BST | 11:00 PM GMT |
| 12:30 AM BST | 11:30 PM GMT |
| 1:00 AM BST | 12:00 AM GMT |
| 1:30 AM BST | 12:30 AM GMT |
| 2:00 AM BST | 1:00 AM GMT |
| 2:30 AM BST | 1:30 AM GMT |
| 3:00 AM BST | 2:00 AM GMT |
| 3:30 AM BST | 2:30 AM GMT |
| 4:00 AM BST | 3:00 AM GMT |
| 4:30 AM BST | 3:30 AM GMT |
| 5:00 AM BST | 4:00 AM GMT |
| 5:30 AM BST | 4:30 AM GMT |
| 6:00 AM BST | 5:00 AM GMT |
| 6:30 AM BST | 5:30 AM GMT |
| 7:00 AM BST | 6:00 AM GMT |
| 7:30 AM BST | 6:30 AM GMT |
| 8:00 AM BST | 7:00 AM GMT |
| 8:30 AM BST | 7:30 AM GMT |
| 9:00 AM BST | 8:00 AM GMT |
| 9:30 AM BST | 8:30 AM GMT |
| 10:00 AM BST | 9:00 AM GMT |
| 10:30 AM BST | 9:30 AM GMT |
| 11:00 AM BST | 10:00 AM GMT |
| 11:30 AM BST | 10:30 AM GMT |
| 12:00 PM BST | 11:00 AM GMT |
| 12:30 PM BST | 11:30 AM GMT |
| 1:00 PM BST | 12:00 PM GMT |
| 1:30 PM BST | 12:30 PM GMT |
| 2:00 PM BST | 1:00 PM GMT |
| 2:30 PM BST | 1:30 PM GMT |
| 3:00 PM BST | 2:00 PM GMT |
| 3:30 PM BST | 2:30 PM GMT |
| 4:00 PM BST | 3:00 PM GMT |
| 4:30 PM BST | 3:30 PM GMT |
| 5:00 PM BST | 4:00 PM GMT |
| 5:30 PM BST | 4:30 PM GMT |
| 6:00 PM BST | 5:00 PM GMT |
| 6:30 PM BST | 5:30 PM GMT |
| 7:00 PM BST | 6:00 PM GMT |
| 7:30 PM BST | 6:30 PM GMT |
| 8:00 PM BST | 7:00 PM GMT |
| 8:30 PM BST | 7:30 PM GMT |
| 9:00 PM BST | 8:00 PM GMT |
| 9:30 PM BST | 8:30 PM GMT |
| 10:00 PM BST | 9:00 PM GMT |
| 10:30 PM BST | 9:30 PM GMT |
| 11:00 PM BST | 10:00 PM GMT |
| 11:30 PM BST | 10:30 PM GMT |
Greenwich Mean Time (GMT) is 1 hour behind British Summer Time (BST). When converting from BST to GMT, you need to subtract 1 hour to get the correct time.
When it's 12:00 PM (noon) in British Summer Time, it's 11:00 AM in Greenwich Mean Time. This is because GMT is 1 hour behind BST.
When it's 12:00 AM (midnight) in British Summer Time, it's 11:00 PM in Greenwich Mean Time.
British Summer Time (BST) has a UTC offset of +1:00, while Greenwich Mean Time (GMT) has a UTC offset of +0:00.
Simply subtract 1 hour to the BST time. For example, 3:00 PM BST becomes 2:00 PM GMT.
The best time depends on both parties' schedules. A common overlap during business hours (9 AM - 5 PM) would be when it's late afternoon in BST. Use our converter to find the perfect time.
Daylight Saving Time (DST) observance varies by region. Some areas within British Summer Time and Greenwich Mean Time zones may observe DST, which can temporarily change the time difference by 1 hour.
British Summer Time (BST) is used by various countries and regions around the world. The UTC offset of +1:00 is shared by multiple time zones.
Greenwich Mean Time (GMT) is used by various countries and regions around the world. With a UTC offset of +0:00, this time zone covers multiple geographic areas.
Yes! Remember that GMT is always 1 hour behind BST. If it's noon in BST, it's 11:00 AM in GMT. Bookmark this page for quick reference!
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