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Convert British Summer Time (BST) to Chatham Island Standard Time (CHAST, UTC+12.75) for regional business calls. Free converter with real-time conversion, meeting time planner, and business hours comparison for BST to CHAST coordination. Includes 24-hour conversion table and live time displays. Perfect for international scheduling and global team collaboration. Works on all devices with accurate, reliable results.
Chatham Island Standard Time is 11 hours and 45 minutes ahead of British Summer Time
Complete hourly conversion for British Summer Time to Chatham Island Standard Time
| British Summer Time | Chatham Island Standard Time | 24-Hour BST | 24-Hour CHAST |
|---|---|---|---|
| 12:00 AM | 11:45 AM | 00:00 | 11:45 |
| 1:00 AM | 12:45 PM | 01:00 | 12:45 |
| 2:00 AM | 1:45 PM | 02:00 | 13:45 |
| 3:00 AM | 2:45 PM | 03:00 | 14:45 |
| 4:00 AM | 3:45 PM | 04:00 | 15:45 |
| 5:00 AM | 4:45 PM | 05:00 | 16:45 |
| 6:00 AM | 5:45 PM | 06:00 | 17:45 |
| 7:00 AM | 6:45 PM | 07:00 | 18:45 |
| 8:00 AM | 7:45 PM | 08:00 | 19:45 |
| 9:00 AM | 8:45 PM | 09:00 | 20:45 |
| 10:00 AM | 9:45 PM | 10:00 | 21:45 |
| 11:00 AM | 10:45 PM | 11:00 | 22:45 |
| 12:00 PM | 11:45 PM | 12:00 | 23:45 |
| 1:00 PM | 12:45 AM (next day) | 13:00 | 00:45 |
| 2:00 PM | 1:45 AM (next day) | 14:00 | 01:45 |
| 3:00 PM | 2:45 AM (next day) | 15:00 | 02:45 |
| 4:00 PM | 3:45 AM (next day) | 16:00 | 03:45 |
| 5:00 PM | 4:45 AM (next day) | 17:00 | 04:45 |
| 6:00 PM | 5:45 AM (next day) | 18:00 | 05:45 |
| 7:00 PM | 6:45 AM (next day) | 19:00 | 06:45 |
| 8:00 PM | 7:45 AM (next day) | 20:00 | 07:45 |
| 9:00 PM | 8:45 AM (next day) | 21:00 | 08:45 |
| 10:00 PM | 9:45 AM (next day) | 22:00 | 09:45 |
| 11:00 PM | 10:45 AM (next day) | 23:00 | 10:45 |
Optimal hours for calls between BST and CHAST
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
