When it is 12:00 PM in Boulder, it is 10:00 PM in GST.
📞There is no overlap during standard 9-to-5 business hours, so a call may need to be early or late in the day for one side.
Boulder is 10 hours behind GST.
🕐 Add 10 hours to Boulder time to get GST time.
Boulder uses 6 hours behind Universal Time (UTC-6) and GST uses 4 hours ahead of Universal Time (UTC+4).
| Boulder Time | GST Time | |
|---|---|---|
| 12 AM Boulder Time | ↔ | 10 AM GST Time |
| 1 AM Boulder Time | ↔ | 11 AM GST Time |
| 2 AM Boulder Time | ↔ | 12 PM GST Time |
| 3 AM Boulder Time | ↔ | 1 PM GST Time |
| 4 AM Boulder Time | ↔ | 2 PM GST Time |
| 5 AM Boulder Time | ↔ | 3 PM GST Time |
| 6 AM Boulder Time | ↔ | 4 PM GST Time |
| 7 AM Boulder Time | ↔ | 5 PM GST Time |
| 8 AM Boulder Time | ↔ | 6 PM GST Time |
| 9 AM Boulder Time | ↔ | 7 PM GST Time |
| 10 AM Boulder Time | ↔ | 8 PM GST Time |
| 11 AM Boulder Time | ↔ | 9 PM GST Time |
| Boulder Time | GST Time | |
|---|---|---|
| 12 PM Boulder Time | ↔ | 10 PM GST Time |
| 1 PM Boulder Time | ↔ | 11 PM GST Time |
| 2 PM Boulder Time | ↔ | 12 AM GST Time |
| 3 PM Boulder Time | ↔ | 1 AM GST Time |
| 4 PM Boulder Time | ↔ | 2 AM GST Time |
| 5 PM Boulder Time | ↔ | 3 AM GST Time |
| 6 PM Boulder Time | ↔ | 4 AM GST Time |
| 7 PM Boulder Time | ↔ | 5 AM GST Time |
| 8 PM Boulder Time | ↔ | 6 AM GST Time |
| 9 PM Boulder Time | ↔ | 7 AM GST Time |
| 10 PM Boulder Time | ↔ | 8 AM GST Time |
| 11 PM Boulder Time | ↔ | 9 AM GST Time |
Boulder is 10 hours behind GST.
Boulder is behind GST by 10 hours.
It is 7:00 PM in GST.