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Time difference between Perth and London

London is 7 hours behind Perth

Perth, Australia is UTC+8 · London, the United Kingdom is UTC — on standard time

The gap is not the same all year

Every converter gives one number for this pair. That number is right for most of the year and wrong for part of it, because Perth does not change its clocks and London goes forward on the last Sunday in March and back on the last Sunday in October.

Perth / London clocksDifferenceHow long
standard / summer7 hours behindabout 30 weeks
standard / standard8 hours behindabout 22 weeks

Perth stays put all year while London moves, so the gap changes twice a year from London's side alone. A recurring meeting set in Perth's calendar will drift by an hour without anyone touching it.

When they can both be at their desks

Nine-to-five in both cities overlaps for 1 hour — 4:00 PM to 5:00 PM in Perth, the same moment as 9:00 AM to 10:00 AM in London.

Perth to London, hour by hour

PerthLondon
12:00 AM5:00 PM (previous day)
1:00 AM6:00 PM (previous day)
2:00 AM7:00 PM (previous day)
3:00 AM8:00 PM (previous day)
4:00 AM9:00 PM (previous day)
5:00 AM10:00 PM (previous day)
6:00 AM11:00 PM (previous day)
7:00 AM12:00 AM
8:00 AM1:00 AM
9:00 AM2:00 AM
10:00 AM3:00 AM
11:00 AM4:00 AM
12:00 PM5:00 AM
1:00 PM6:00 AM
2:00 PM7:00 AM
3:00 PM8:00 AM
4:00 PM9:00 AM
5:00 PM10:00 AM
6:00 PM11:00 AM
7:00 PM12:00 PM
8:00 PM1:00 PM
9:00 PM2:00 PM
10:00 PM3:00 PM
11:00 PM4:00 PM

On the usual gap of 7 hours.

Frequently asked questions

What is the time difference between Perth and London?

London is 7 hours behind Perth for most of the year. It is not the same all year — there is one other gap, because Perth does not change its clocks and London goes forward on the last Sunday in March and back on the last Sunday in October.

Is London ahead of Perth?

No — London is 7 hours behind. Perth is UTC+8 and London is UTC on standard time.

What time is 9 AM in Perth in London?

2:00 AM, on the usual gap.

When can Perth and London meet?

Standard nine-to-five hours overlap for 1 hour: 4:00 PM–5:00 PM in Perth, which is 9:00 AM–10:00 AM in London.

Other pairs

Every Perth pair · Every London pair · All city pairs · Time zones by abbreviation