When it is 12:00 PM in HST, it is 1:00 AM the next day 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.
HST is 13 hours behind Istanbul.
🕐 Add 13 hours to HST time to get Istanbul time.
HST uses 10 hours behind Universal Time (UTC-1) and Istanbul uses 3 hours ahead of Universal Time (UTC+3).
| HST Time | Istanbul Time | |
|---|---|---|
| 12 AM HST Time | ↔ | 1 PM Istanbul Time |
| 1 AM HST Time | ↔ | 2 PM Istanbul Time |
| 2 AM HST Time | ↔ | 3 PM Istanbul Time |
| 3 AM HST Time | ↔ | 4 PM Istanbul Time |
| 4 AM HST Time | ↔ | 5 PM Istanbul Time |
| 5 AM HST Time | ↔ | 6 PM Istanbul Time |
| 6 AM HST Time | ↔ | 7 PM Istanbul Time |
| 7 AM HST Time | ↔ | 8 PM Istanbul Time |
| 8 AM HST Time | ↔ | 9 PM Istanbul Time |
| 9 AM HST Time | ↔ | 10 PM Istanbul Time |
| 10 AM HST Time | ↔ | 11 PM Istanbul Time |
| 11 AM HST Time | ↔ | 12 AM Istanbul Time |
| HST Time | Istanbul Time | |
|---|---|---|
| 12 PM HST Time | ↔ | 1 AM Istanbul Time |
| 1 PM HST Time | ↔ | 2 AM Istanbul Time |
| 2 PM HST Time | ↔ | 3 AM Istanbul Time |
| 3 PM HST Time | ↔ | 4 AM Istanbul Time |
| 4 PM HST Time | ↔ | 5 AM Istanbul Time |
| 5 PM HST Time | ↔ | 6 AM Istanbul Time |
| 6 PM HST Time | ↔ | 7 AM Istanbul Time |
| 7 PM HST Time | ↔ | 8 AM Istanbul Time |
| 8 PM HST Time | ↔ | 9 AM Istanbul Time |
| 9 PM HST Time | ↔ | 10 AM Istanbul Time |
| 10 PM HST Time | ↔ | 11 AM Istanbul Time |
| 11 PM HST Time | ↔ | 12 PM Istanbul Time |
HST is 13 hours behind Istanbul.
HST is behind Istanbul by 13 hours.
It is 10:00 PM in Istanbul.