When it is 12:00 PM in Kolkata, it is 8:30 PM the previous day 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.
Kolkata is 15 hours 30 minutes ahead of HST.
🕐 Subtract 15 hours 30 minutes from Kolkata time to get HST time.
Kolkata uses 5 hours 30 minutes ahead of Universal Time (UTC+5) and HST uses 10 hours behind Universal Time (UTC-1).
| Kolkata Time | HST Time | |
|---|---|---|
| 12 AM Kolkata Time | ↔ | 8 AM HST Time |
| 1 AM Kolkata Time | ↔ | 9 AM HST Time |
| 2 AM Kolkata Time | ↔ | 10 AM HST Time |
| 3 AM Kolkata Time | ↔ | 11 AM HST Time |
| 4 AM Kolkata Time | ↔ | 12 PM HST Time |
| 5 AM Kolkata Time | ↔ | 1 PM HST Time |
| 6 AM Kolkata Time | ↔ | 2 PM HST Time |
| 7 AM Kolkata Time | ↔ | 3 PM HST Time |
| 8 AM Kolkata Time | ↔ | 4 PM HST Time |
| 9 AM Kolkata Time | ↔ | 5 PM HST Time |
| 10 AM Kolkata Time | ↔ | 6 PM HST Time |
| 11 AM Kolkata Time | ↔ | 7 PM HST Time |
| Kolkata Time | HST Time | |
|---|---|---|
| 12 PM Kolkata Time | ↔ | 8 PM HST Time |
| 1 PM Kolkata Time | ↔ | 9 PM HST Time |
| 2 PM Kolkata Time | ↔ | 10 PM HST Time |
| 3 PM Kolkata Time | ↔ | 11 PM HST Time |
| 4 PM Kolkata Time | ↔ | 12 AM HST Time |
| 5 PM Kolkata Time | ↔ | 1 AM HST Time |
| 6 PM Kolkata Time | ↔ | 2 AM HST Time |
| 7 PM Kolkata Time | ↔ | 3 AM HST Time |
| 8 PM Kolkata Time | ↔ | 4 AM HST Time |
| 9 PM Kolkata Time | ↔ | 5 AM HST Time |
| 10 PM Kolkata Time | ↔ | 6 AM HST Time |
| 11 PM Kolkata Time | ↔ | 7 AM HST Time |
Kolkata is 15 hours 30 minutes ahead of HST.
Kolkata is ahead of HST by 15 hours 30 minutes.
It is 5:30 PM the previous day in HST.