Perth is 7 hours ahead of London from late March to late October, and 8 hours the rest of the year.
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Quick reference
| LONDON | PERTH · LATE MAR–LATE OCT | PERTH · REST OF YEAR |
|---|---|---|
| 9:00 am | 4:00 pm | 5:00 pm |
| 12:00 pm | 7:00 pm | 8:00 pm |
| 3:00 pm | 10:00 pm | 11:00 pm |
| 6:00 pm | 1:00 am next day | 2:00 am next day |
| 9:00 pm | 4:00 am next day | 5:00 am next day |
Questions
7 hours from late March to late October, while London is on British Summer Time (BST). 8 hours the rest of the year, while London is on Greenwich Mean Time (GMT).
4pm from late March to late October, and 5pm the rest of the year.
Only London. It moves to BST (UTC+1) in late March and back to GMT (UTC+0) in late October. Perth stays on Australian Western Standard Time (AWST, UTC+8) all year.