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Convert Greenwich Mean Time (GMT) to British Summer Time (BST, UTC+1) with our professional time zone converter. Designed for international business meetings between London to London, this tool provides real-time conversion, optimal meeting time suggestions, business hours comparison, and 24-hour conversion tables. Features include live clock displays, meeting scheduler, time zone maps, and daylight saving time handling. Perfect for international business coordination, global team management, and cross-border communication. No registration required - works instantly on all devices with offline capability.
British Summer Time is 1 hour ahead of Greenwich Mean Time
Complete hourly conversion for Greenwich Mean Time to British Summer Time
| Greenwich Mean Time | British Summer Time | 24-Hour GMT | 24-Hour BST |
|---|---|---|---|
| 12:00 AM | 1:00 AM | 00:00 | 01:00 |
| 1:00 AM | 2:00 AM | 01:00 | 02:00 |
| 2:00 AM | 3:00 AM | 02:00 | 03:00 |
| 3:00 AM | 4:00 AM | 03:00 | 04:00 |
| 4:00 AM | 5:00 AM | 04:00 | 05:00 |
| 5:00 AM | 6:00 AM | 05:00 | 06:00 |
| 6:00 AM | 7:00 AM | 06:00 | 07:00 |
| 7:00 AM | 8:00 AM | 07:00 | 08:00 |
| 8:00 AM | 9:00 AM | 08:00 | 09:00 |
| 9:00 AM | 10:00 AM | 09:00 | 10:00 |
| 10:00 AM | 11:00 AM | 10:00 | 11:00 |
| 11:00 AM | 12:00 PM | 11:00 | 12:00 |
| 12:00 PM | 1:00 PM | 12:00 | 13:00 |
| 1:00 PM | 2:00 PM | 13:00 | 14:00 |
| 2:00 PM | 3:00 PM | 14:00 | 15:00 |
| 3:00 PM | 4:00 PM | 15:00 | 16:00 |
| 4:00 PM | 5:00 PM | 16:00 | 17:00 |
| 5:00 PM | 6:00 PM | 17:00 | 18:00 |
| 6:00 PM | 7:00 PM | 18:00 | 19:00 |
| 7:00 PM | 8:00 PM | 19:00 | 20:00 |
| 8:00 PM | 9:00 PM | 20:00 | 21:00 |
| 9:00 PM | 10:00 PM | 21:00 | 22:00 |
| 10:00 PM | 11:00 PM | 22:00 | 23:00 |
| 11:00 PM | 12:00 AM (next day) | 23:00 | 00:00 |
Optimal hours for calls between GMT and BST
Based on standard business hours (9:00 AM - 6:00 PM) in each time zone
Technical information for both time zones
Source timezone
Target timezone
Greenwich Mean Time (GMT) is 1 hour behind British Summer Time (BST). To convert GMT to BST, you need to add 1 hour. For example, if it is noon GMT, it will be 1:00 PM BST.
When planning meetings between participants in GMT and BST, be mindful of the 1-hour difference. It’s advisable to schedule meetings during overlapping business hours; for example, if it’s convenient for participants in GMT from 9:00 AM to 5:00 PM, this translates to 10:00 AM to 6:00 PM in BST. This ensures that all parties can attend without conflicts.
To manually convert GMT to BST, take your GMT and add 1 hour. For instance: If it’s 8:00 AM in GMT, adding 1 hour gives you 9:00 AM in BST. This method can be applied at any hour of the day.
Yes, daylight saving time directly impacts this conversion. BST is observed during the summer months, starting on the last Sunday in March and ending on the last Sunday in October. During this period, clocks are set forward by one hour, making BST UTC+1.
You can use the time zone converter available at iformat.io. This tool lets you input any GMT and instantly receive the corresponding BST time, simplifying the conversion process.
