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