London is 8 hours behind Perth from 25 Oct 2026 until 28 Mar 2027.
Next change: On Sun 28 Mar 2027, the UK starts daylight saving time and the gap becomes 7 hours.
Your device's time zone data looks out of date for one of these cities, so its own clock may disagree. The times on this page use the 2026e rules.
Best time to call
The table below uses the 8-hour gap until 28 Mar 2027; it updates to today’s gap in your browser.
Good window: 4 pm–9 pm in Perth = 8 am–1 pm in London.
Work-hours overlap with the current 8-hour gap: none, the working days do not overlap.
| Perth | London | Both 8 am–9 pm |
|---|---|---|
| 00:00 | 16:00 (prev. day) | |
| 01:00 | 17:00 (prev. day) | |
| 02:00 | 18:00 (prev. day) | |
| 03:00 | 19:00 (prev. day) | |
| 04:00 | 20:00 (prev. day) | |
| 05:00 | 21:00 (prev. day) | |
| 06:00 | 22:00 (prev. day) | |
| 07:00 | 23:00 (prev. day) | |
| 08:00 | 00:00 | |
| 09:00 | 01:00 | |
| 10:00 | 02:00 | |
| 11:00 | 03:00 | |
| 12:00 | 04:00 | |
| 13:00 | 05:00 | |
| 14:00 | 06:00 | |
| 15:00 | 07:00 | |
| 16:00 | 08:00 | ✓ |
| 17:00 | 09:00 | ✓ |
| 18:00 | 10:00 | ✓ |
| 19:00 | 11:00 | ✓ |
| 20:00 | 12:00 | ✓ |
| 21:00 | 13:00 | |
| 22:00 | 14:00 | |
| 23:00 | 15:00 |
Year at a glance
| From (Perth date) | Until | London vs Perth |
|---|---|---|
| Sun 25 Oct 2026 | Sun 28 Mar 2027 | 8 hours behind |
| Sun 28 Mar 2027 | Sun 31 Oct 2027 | 7 hours behind |
| Sun 31 Oct 2027 | … | 8 hours behind |
- Sun 28 Mar 2027: The UK starts daylight saving; London becomes 7 hours behind Perth.
- Sun 31 Oct 2027: The UK ends daylight saving; London becomes 8 hours behind Perth.
Quick answers
Is London ahead or behind Perth?
London is 8 hours behind Perth from 25 Oct 2026 until 28 Mar 2027. On Sun 28 Mar 2027, the UK starts daylight saving time and the gap becomes 7 hours. Over the next 12 months it varies between 7 and 8 hours, depending on daylight saving. (IANA tz database 2026e.) Your browser shows today’s value on this page.
Does the time difference change during the year?
Yes, from Sun 25 Oct 2026 it is 8 hours; from Sun 28 Mar 2027 it is 7 hours; from Sun 31 Oct 2027 it is 8 hours. Both cities follow their own daylight saving rules (IANA tz database 2026e).
When is the best time to call London from Perth?
With the current 8-hour gap until 28 Mar 2027 and both sides between 8 am and 9 pm local time: 4 pm–9 pm in Perth = 8 am–1 pm in London. When the gap changes, the live table on this page adjusts.
Related
Other time differences from Perth: Auckland and London · Wellington and London · Christchurch and London · Sydney and London
Sources
Time zone rules: IANA tz database 2026e (zones Australia/Perth and Europe/London). Last checked 18 Oct 2026. Daylight saving rules can change; we re-check them regularly.