When it is 12:00 PM in Boulder, it is 9:00 PM in Istanbul.
📞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 9 hours behind Istanbul.
🕐 Add 9 hours to Boulder time to get Istanbul time.
Boulder uses 6 hours behind Universal Time (UTC-6) and Istanbul uses 3 hours ahead of Universal Time (UTC+3).
| Boulder Time | Istanbul Time | |
|---|---|---|
| 12 AM Boulder Time | ↔ | ☼ 9 AM Istanbul Time |
| 1 AM Boulder Time | ↔ | ☼ 10 AM Istanbul Time |
| 2 AM Boulder Time | ↔ | ☼ 11 AM Istanbul Time |
| 3 AM Boulder Time | ↔ | ☼ 12 PM Istanbul Time |
| 4 AM Boulder Time | ↔ | ☼ 1 PM Istanbul Time |
| ☼ 5 AM Boulder Time | ↔ | ☼ 2 PM Istanbul Time |
| ☼ 6 AM Boulder Time | ↔ | ☼ 3 PM Istanbul Time |
| ☼ 7 AM Boulder Time | ↔ | ☼ 4 PM Istanbul Time |
| ☼ 8 AM Boulder Time | ↔ | ☼ 5 PM Istanbul Time |
| ☼ 9 AM Boulder Time | ↔ | ☼ 6 PM Istanbul Time |
| ☼ 10 AM Boulder Time | ↔ | ☼ 7 PM Istanbul Time |
| ☼ 11 AM Boulder Time | ↔ | ☼ 8 PM Istanbul Time |
| Boulder Time | Istanbul Time | |
|---|---|---|
| ☼ 12 PM Boulder Time | ↔ | 9 PM Istanbul Time |
| ☼ 1 PM Boulder Time | ↔ | 10 PM Istanbul Time |
| ☼ 2 PM Boulder Time | ↔ | 11 PM Istanbul Time |
| ☼ 3 PM Boulder Time | ↔ | 12 AM Istanbul Time |
| ☼ 4 PM Boulder Time | ↔ | 1 AM Istanbul Time |
| ☼ 5 PM Boulder Time | ↔ | 2 AM Istanbul Time |
| ☼ 6 PM Boulder Time | ↔ | 3 AM Istanbul Time |
| ☼ 7 PM Boulder Time | ↔ | 4 AM Istanbul Time |
| ☼ 8 PM Boulder Time | ↔ | ☼ 5 AM Istanbul Time |
| 9 PM Boulder Time | ↔ | ☼ 6 AM Istanbul Time |
| 10 PM Boulder Time | ↔ | ☼ 7 AM Istanbul Time |
| 11 PM Boulder Time | ↔ | ☼ 8 AM Istanbul Time |
Boulder is 9 hours behind Istanbul.
Boulder is behind Istanbul by 9 hours.
It is 6:00 PM in Istanbul.