When it is 12:00 PM in Williamstown, it is 10:30 PM the previous day in AST.
📞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.
Williamstown is 13 hours 30 minutes ahead of AST.
🕐 Subtract 13 hours 30 minutes from Williamstown time to get AST time.
Williamstown uses 9 hours 30 minutes ahead of Universal Time (UTC+9) and AST uses 4 hours behind Universal Time (UTC-4).
| Williamstown Time | AST Time | |
|---|---|---|
| 12 AM Williamstown Time | ↔ | 10 AM AST Time |
| 1 AM Williamstown Time | ↔ | 11 AM AST Time |
| 2 AM Williamstown Time | ↔ | 12 PM AST Time |
| 3 AM Williamstown Time | ↔ | 1 PM AST Time |
| 4 AM Williamstown Time | ↔ | 2 PM AST Time |
| 5 AM Williamstown Time | ↔ | 3 PM AST Time |
| 6 AM Williamstown Time | ↔ | 4 PM AST Time |
| 7 AM Williamstown Time | ↔ | 5 PM AST Time |
| 8 AM Williamstown Time | ↔ | 6 PM AST Time |
| 9 AM Williamstown Time | ↔ | 7 PM AST Time |
| 10 AM Williamstown Time | ↔ | 8 PM AST Time |
| 11 AM Williamstown Time | ↔ | 9 PM AST Time |
| Williamstown Time | AST Time | |
|---|---|---|
| 12 PM Williamstown Time | ↔ | 10 PM AST Time |
| 1 PM Williamstown Time | ↔ | 11 PM AST Time |
| 2 PM Williamstown Time | ↔ | 12 AM AST Time |
| 3 PM Williamstown Time | ↔ | 1 AM AST Time |
| 4 PM Williamstown Time | ↔ | 2 AM AST Time |
| 5 PM Williamstown Time | ↔ | 3 AM AST Time |
| 6 PM Williamstown Time | ↔ | 4 AM AST Time |
| 7 PM Williamstown Time | ↔ | 5 AM AST Time |
| 8 PM Williamstown Time | ↔ | 6 AM AST Time |
| 9 PM Williamstown Time | ↔ | 7 AM AST Time |
| 10 PM Williamstown Time | ↔ | 8 AM AST Time |
| 11 PM Williamstown Time | ↔ | 9 AM AST Time |
Williamstown is 13 hours 30 minutes ahead of AST.
Williamstown is ahead of AST by 13 hours 30 minutes.
It is 7:30 PM the previous day in AST.