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Convert Greenwich Mean Time (GMT) to Hawaii Standard Time (HST, UTC-10) for regional business calls. Free converter with real-time conversion, meeting time planner, and business hours comparison for GMT to HST 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.
Hawaii Standard Time is 10 hours behind Greenwich Mean Time
Complete hourly conversion for Greenwich Mean Time to Hawaii Standard Time
| Greenwich Mean Time | Hawaii Standard Time | 24-Hour GMT | 24-Hour HST |
|---|---|---|---|
| 12:00 AM | 2:00 PM (previous day) | 00:00 | 14:00 |
| 1:00 AM | 3:00 PM (previous day) | 01:00 | 15:00 |
| 2:00 AM | 4:00 PM (previous day) | 02:00 | 16:00 |
| 3:00 AM | 5:00 PM (previous day) | 03:00 | 17:00 |
| 4:00 AM | 6:00 PM (previous day) | 04:00 | 18:00 |
| 5:00 AM | 7:00 PM (previous day) | 05:00 | 19:00 |
| 6:00 AM | 8:00 PM (previous day) | 06:00 | 20:00 |
| 7:00 AM | 9:00 PM (previous day) | 07:00 | 21:00 |
| 8:00 AM | 10:00 PM (previous day) | 08:00 | 22:00 |
| 9:00 AM | 11:00 PM (previous day) | 09:00 | 23:00 |
| 10:00 AM | 12:00 AM | 10:00 | 00:00 |
| 11:00 AM | 1:00 AM | 11:00 | 01:00 |
| 12:00 PM | 2:00 AM | 12:00 | 02:00 |
| 1:00 PM | 3:00 AM | 13:00 | 03:00 |
| 2:00 PM | 4:00 AM | 14:00 | 04:00 |
| 3:00 PM | 5:00 AM | 15:00 | 05:00 |
| 4:00 PM | 6:00 AM | 16:00 | 06:00 |
| 5:00 PM | 7:00 AM | 17:00 | 07:00 |
| 6:00 PM | 8:00 AM | 18:00 | 08:00 |
| 7:00 PM | 9:00 AM | 19:00 | 09:00 |
| 8:00 PM | 10:00 AM | 20:00 | 10:00 |
| 9:00 PM | 11:00 AM | 21:00 | 11:00 |
| 10:00 PM | 12:00 PM | 22:00 | 12:00 |
| 11:00 PM | 1:00 PM | 23:00 | 13:00 |
Optimal hours for calls between GMT and HST
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
