Live · calculated from the IANA time-zone database

Time difference between London and Sydney

Short answer

Sydney is 9 hours ahead of London. Right now it is 13:34 in London (GMT+1, UTC+1) and 22:34 in Sydney (GMT+10, UTC+10).

Right now

London · United Kingdom

13:34

Tuesday, September 15, 2026

British Summer Time · GMT+1 · UTC+1

Sydney · Australia

22:34

Tuesday, September 15, 2026

Australian Eastern Standard Time · GMT+10 · UTC+10

Times at the moment this page was generated. Reload for a fresh reading.

Does the difference between London and Sydney change during the year?

Yes. For 182 days of 2026 the difference is 9 hours, but it moves whenever London or Sydney enters or leaves daylight saving time. Here is the full 2026 calendar (dates in UTC):

From	Until	Sydney vs London
January 1	March 29	+11 h
March 29	April 4	+10 h
April 4	October 3	+9 h
October 3	October 25	+10 h
October 25	December 31	+11 h

The highlighted row is the current period. Every date comes from each zone's official rules, not from a hand-typed table.

Best time to call Sydney from London (and vice versa)

With 9 hours between them there is no hour at which London and Sydney are both inside a 9:00–17:00 working day. Teams split across these two cities usually alternate the sacrifice: one week the meeting lands early (7:00–8:00) in London and late (18:00–19:00) in the other city, the next week the other way round. The Timezone Matcher grid shades exactly those compromise hours.

London to Sydney conversion table

Each London hour and its equivalent in Sydney today. Rows shaded green are working hours (9:00–17:00) in both cities at once.

London time · Tue, Sep 15	Sydney time
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	00:00next day
16:00	01:00next day
17:00	02:00next day
18:00	03:00next day
19:00	04:00next day
20:00	05:00next day
21:00	06:00next day
22:00	07:00next day
23:00	08:00next day

Looking for it the other way round? This page covers both directions: Sydney to London is the same difference with the sign flipped.

The two time zones

London — Europe/London

London sits on the Greenwich meridian: GMT (UTC+0) in winter and British Summer Time (UTC+1) from the last Sunday of March to the last Sunday of October.

Sydney — Australia/Sydney

Sydney uses Australian Eastern Time: UTC+10 in winter (AEST) and UTC+11 in summer (AEDT), from the first Sunday of October to the first Sunday of April — opposite to the northern hemisphere.

Frequently asked questions

How many hours difference between London and Sydney?

Sydney is 9 hours ahead of London. For most of the year (182 days) the difference is 9 hours; it shifts during the weeks when one of the two cities enters or leaves daylight saving time.

When it is 12:00 noon in London, what time is it in Sydney?

21:00 in Sydney (at today's difference of 9 hours).

What is the best time for a meeting between London and Sydney?

There is no overlap between the 9:00–17:00 working days of London and Sydney. Teams usually alternate: an early-morning slot in London lands in the late evening of the other city.

Do London and Sydney observe daylight saving time?

London: yes. Sydney: yes. Both change, but not necessarily on the same dates — see the transitions section on this page.

What time zone is London in? And Sydney?

London: British Summer Time (Europe/London, UTC+1). Sydney: Australian Eastern Standard Time (Australia/Sydney, UTC+10).

Tools

Meeting grid — add both cities and click a slot

Time zone converter — any city, any time

Working hours overlap calculator

Daylight saving time 2027 — all dates