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