When it is 09:00 in London it is 20:00 in Sydney in January and 18:00 in July. Sydney is 11 hours ahead London right now — but it is not constant: the difference is 11 hours ahead in January and 9 hours ahead in July. This page gives the live times in both cities, the overlap between their working days, the daylight saving dates that move the difference, and the best meeting windows.
Try the tool: Time Zone Converter — convert any time between London and Sydney, with the offset for the date you pick.
Live times in London and Sydney
The two cities side by side. The January column uses the winter offsets (London UTC+00:00, Sydney UTC+11:00); the July column uses the summer offsets (London UTC+01:00, Sydney UTC+10:00).
| Time in London | Sydney in January | Sydney in July |
|---|---|---|
| 00:00 | 11:00 | 09:00 |
| 06:00 | 17:00 | 15:00 |
| 09:00 | 20:00 | 18:00 |
| 12:00 | 23:00 | 21:00 |
| 15:00 | 02:00 | 00:00 |
| 17:00 | 04:00 | 02:00 |
| 21:00 | 08:00 | 06:00 |
The world clock shows the current time in both cities live, and the individual city pages — time in London and time in Sydney — explain each city's time zone, offsets and daylight saving in full.
The time difference between London and Sydney
The difference is not constant. In January Sydney is 11 hours ahead London; in July it is 9 hours ahead London. The difference changes on Sunday, 29 March 2026 (from 11 hours ahead to 10 hours ahead) and Sunday, 5 April 2026 (from 10 hours ahead to 9 hours ahead) and Sunday, 4 October 2026 (from 9 hours ahead to 10 hours ahead) and Sunday, 25 October 2026 (from 10 hours ahead to 11 hours ahead) — those are the dates when one of the two cities changes its clocks and the other does not, or when they change on different days. Between those dates the difference is one value; outside them it is the other.
To convert a time, add the difference: 09:00 in London is 20:00 in Sydney in January and 18:00 in July; 17:00 in London — the end of the working day — is 04:00 in Sydney in January and 02:00 in July. To go the other way, subtract it: 09:00 in Sydney is 22:00 in London in January. The time difference calculator does the arithmetic for any date, and the UTC to Sydney page gives the full conversion table for Sydney.
Meeting overlap between London and Sydney
The overlap is the hours when both cities are in their working day (09:00–17:00 local time). The table marks the overlapping hours in London's working day and shows what time they are in Sydney.
January
| London time | Sydney time | Both working? |
|---|---|---|
| 09:00 | 20:00 | No |
| 10:00 | 21:00 | No |
| 11:00 | 22:00 | No |
| 12:00 | 23:00 | No |
| 13:00 | 00:00 | No |
| 14:00 | 01:00 | No |
| 15:00 | 02:00 | No |
| 16:00 | 03:00 | No |
July
| London time | Sydney time | Both working? |
|---|---|---|
| 09:00 | 18:00 | No |
| 10:00 | 19:00 | No |
| 11:00 | 20:00 | No |
| 12:00 | 21:00 | No |
| 13:00 | 22:00 | No |
| 14:00 | 23:00 | No |
| 15:00 | 00:00 | No |
| 16:00 | 01:00 | No |
In January the overlap is 0 hours: there is no hour when both cities are in their working day. In July it is 0 hours: there is no hour when both cities are in their working day. The two working days do not overlap at all — the difference is too large. The only options are to meet at the edge of the day, to rotate the awkward hour, or to record the meeting.
Daylight saving in London and Sydney
London observes daylight saving: in 2026 the clocks go forward on 29 March 2026 and back on 25 October 2026, moving the offset from UTC+00:00 to UTC+01:00.
Sydney observes daylight saving: in 2026 the clocks go forward on 4 October 2026 and back on 5 April 2026, moving the offset from UTC+10:00 to UTC+11:00.
The difference changes on Sunday, 29 March 2026 and Sunday, 5 April 2026 and Sunday, 4 October 2026 and Sunday, 25 October 2026 in 2026. On those dates, one city changes its clocks and the other does not — or they change on different days — so the difference moves by an hour. A standing meeting set in one city's local time will land an hour early or late on the other side until the second city catches up. The fix is to set the calendar event in UTC, or to check the overlap again after each change. The individual DST pages — London DST 2026 and Sydney DST 2026 — give the exact dates for each city.
Best meeting windows
There is no window inside both working days, in January or in July. The least-bad options are the edges: 08:00 in London is 19:00 in Sydney in January — before the working day in London but a reasonable evening in Sydney — and 17:00 in London is 04:00 in Sydney, which is the morning in Sydney the next day if the difference is large. Rotate the early start between the two sides, week by week, so the same people are not always the ones getting up early.
Calling and travel notes
When it is 09:00 in London it is 20:00 in Sydney in January; when it is 12:00 in London it is 23:00 in Sydney; when it is 17:00 in London it is 04:00 in Sydney. The difference is under 12 hours, so the two cities are usually on the same date — but check the date for late-evening and early-morning times, when the date can differ by a day. Scheduling between Europe and Oceania means a difference of 9–12 hours, so the overlap is small — a couple of hours at the edge of the day. The best window is usually the morning in Sydney and the evening in London, or the reverse. Both sides observe daylight saving, but on opposite schedules, so the difference swings by two hours between January and July — check the tables above for the month you are scheduling in.
Worked conversions
Six conversions, for January (offsets London UTC+00:00, Sydney UTC+11:00):
| London | Sydney |
|---|---|
| 08:00 | 19:00 |
| 09:00 | 20:00 |
| 12:00 | 23:00 |
| 14:00 | 01:00 |
| 17:00 | 04:00 |
| 20:00 | 07:00 |
In July, add 2 hours to each Sydney time. For the reverse direction, see Sydney to London time.
London and Sydney at a glance
| Fact | London | Sydney |
|---|---|---|
| Country | United Kingdom | Australia |
| Region | Europe | Oceania |
| IANA time zone | Europe/London |
Australia/Sydney |
| Standard offset | UTC+00:00 | UTC+10:00 |
| Daylight saving offset | UTC+01:00 | UTC+11:00 |
| Offset in January 2026 | UTC+00:00 | UTC+11:00 |
| Offset in July 2026 | UTC+01:00 | UTC+10:00 |
| Observes daylight saving | Yes | Yes |
The table is the whole pair in one place. The two numbers that matter most are the January and July offsets: if they are the same in both columns for a city, that city's offset never changes; if they differ, the city observes daylight saving and the difference between the cities moves with it. The individual city pages — time in London and time in Sydney — explain each city's time zone, and the DST pages — London DST 2026 and Sydney DST 2026 — give the exact change dates.
Frequently asked questions
What is the time difference between London and Sydney?
Sydney is 11 hours ahead London right now. In January the difference is 11 hours ahead and in July it is 9 hours ahead — it changes with daylight saving.
How do I schedule a recurring meeting between London and Sydney?
Pick a time inside the overlap — the edge of the day, since there is no overlap — and set the calendar event in UTC so it moves correctly when the clocks change. Re-check the overlap in March and October, when the difference moves, and rotate the time if the meeting falls outside someone's working day.
What time is it in Sydney when it is 09:00 in London?
It is 20:00 in January and 18:00 in July. The time zone converter gives the answer for any date.
What is the best time for a meeting between London and Sydney?
There is no hour inside both working days. Meet at the edge of the day — early morning in one city, evening in the other — and rotate the awkward hour.
Does the time difference between London and Sydney change during the year?
Yes. It changes on Sunday, 29 March 2026 and Sunday, 5 April 2026 and Sunday, 4 October 2026 and Sunday, 25 October 2026 in 2026, when one city changes its clocks and the other does not.
What time is it in London when it is 09:00 in Sydney?
It is 22:00 in January and 00:00 in July. See Sydney to London time for the full comparison from Sydney's side.
What are the time zones of London and Sydney?
London is in Europe/London (UTC+00:00 standard time) and Sydney is in Australia/Sydney (UTC+10:00 standard time).
What time is it in London when it is midnight in Sydney?
It is 13:00 in London in January and 15:00 in July — the same day, because London is ahead of Sydney. Midnight conversions are the ones that most often land on the wrong date, so always check the date as well as the time.
Sources
- IANA Time Zone Database, via Node.js Intl (
Intl.DateTimeFormatwithtimeZone) — offsets, daylight saving dates and local times in this article were worked out from the IANA database, not typed from memory. - TimeFlow's own time-zone data (
data/cities.ts,data/dst.ts), computed from the IANA database. - TimeFlow's time zone converter and meeting planner — the live tools behind the numbers on this page.
- Time-zone and daylight saving rules are set by governments and can change. For flights, deadlines and meetings that cannot move, confirm the time with an official source.