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