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