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Hours Apart

London to Sydney

These two are not a fixed distance apart. The gap is +9h, +10h, +11h at different points in the year, and it changes 6 times.

Reading your clock…

Every gap between London and Sydney, with dates

This is the table other converters do not show. Each row is a stretch of the year during which the difference is a particular number. Dates are London's local dates.

Time difference between London and Sydney by date range
FromUntilSydney isLength
Tuesday, 1 September 2026Saturday, 3 October 20269 hours ahead33 days
Sunday, 4 October 2026Saturday, 24 October 202610 hours ahead21 days
Sunday, 25 October 2026Saturday, 27 March 202711 hours ahead154 days
Sunday, 28 March 2027Saturday, 3 April 202710 hours ahead7 days
Sunday, 4 April 2027Saturday, 2 October 20279 hours ahead182 days
Sunday, 3 October 2027Saturday, 30 October 202710 hours ahead28 days
Sunday, 31 October 2027onwards11 hours ahead—

The highlighted row is the one to watch. For 7 days from Sunday, 28 March 2027, the difference is 10 hours ahead rather than the usual figure. A weekly call booked outside that window arrives an hour off inside it.

London hours converted to Sydney

As at Monday, 14 September 2026. Use the converter above for any other day — and if the table of gaps says the difference changes, these numbers change with it.

Hourly conversion from London to Sydney
LondonSydney
07:0016:00
08:0017:00
09:0018:00
10:0019:00
11:0020:00
12:0021:00
13:0022:00
14:0023:00
15:0000:00next day
16:0001:00next day
17:0002:00next day
18:0003:00next day
19:0004:00next day
20:0005:00next day

London

Europe/London

Changes clocks twice a year, between UTC+00:00 and UTC+01:00. Next change Sunday, 25 October 2026.

Sydney

Australia/Sydney

Changes clocks twice a year, between UTC+10:00 and UTC+11:00. Next change Sunday, 4 October 2026.

When London and Sydney can actually talk

On a standard 09:00–17:00 day there is no overlap at all between London and Sydney. One side has to take the call outside their working hours — there is no arrangement of a normal working day that avoids it. Themeeting planner shows how much either side has to stretch, and who is affected least.

Calculated for Monday, 14 September 2026. Because the gap changes during the year, this window moves with it — the planner recomputes it for any date you pick.

Put both on a world clockFind a meeting time for both

Questions

London and Sydney, explained

What is the time difference between London and Sydney?

There is no single answer, which is why most converters get this wrong for part of the year. Sydney is 9 hours ahead, 10 hours ahead, 11 hours ahead relative to London at different points in the year. Right now it is 9 hours ahead. The table on this page gives the exact dates for each.

Why does the difference between London and Sydney change?

London moves between UTC+00:00 and UTC+01:00, while Sydney moves between UTC+10:00 and UTC+11:00. Because the two do not change on the same weekend, and in opposite hemispheres they change in opposite directions, there are short windows each year where the gap is different from the rest of it.

When is the difference between London and Sydney unusual?

The shortest window runs from Sunday, 28 March 2027 to Saturday, 3 April 2027 — 7 days during which Sydney is 10 hours ahead relative to London rather than the usual amount. Short windows like this are where recurring meetings break, because nobody thinks to check.

Does this account for daylight saving automatically?

Yes. Offsets come from your device's own copy of the IANA time zone database through the browser's Intl API, so they reflect whatever rules are current rather than a table bundled here that could go stale. Pick any date in the converter and it resolves that date's rules, not today's.