London to Sydney: time difference and meeting times
Everything you need to schedule between London and Sydney — the current offset, both cities' daylight saving dates, and the hour-by-hour overlap of their working days.
Partial overlap only. There is no hour when both cities are inside core working hours. Both sides are awake and available at 05:00–11:00 UTC, but at least one of them is in the early morning or the evening. That is the realistic window for this pair.
Hour by hour
| UTC | London | Status | Sydney | Status |
|---|---|---|---|---|
| 00:00 | 01:00 | Asleep | 10:00 | Working hours |
| 01:00 | 02:00 | Asleep | 11:00 | Working hours |
| 02:00 | 03:00 | Asleep | 12:00 | Working hours |
| 03:00 | 04:00 | Asleep | 13:00 | Working hours |
| 04:00 | 05:00 | Asleep | 14:00 | Working hours |
| 05:00 | 06:00 | Early morning | 15:00 | Working hours |
| 06:00 | 07:00 | Early morning | 16:00 | Working hours |
| 07:00 | 08:00 | Early morning | 17:00 | Working hours |
| 08:00 | 09:00 | Working hours | 18:00 | Evening |
| 09:00 | 10:00 | Working hours | 19:00 | Evening |
| 10:00 | 11:00 | Working hours | 20:00 | Evening |
| 11:00 | 12:00 | Working hours | 21:00 | Late night |
| 12:00 | 13:00 | Working hours | 22:00 | Late night |
| 13:00 | 14:00 | Working hours | 23:00 | Late night |
| 14:00 | 15:00 | Working hours | 00:00 next day | Asleep |
| 15:00 | 16:00 | Working hours | 01:00 next day | Asleep |
| 16:00 | 17:00 | Working hours | 02:00 next day | Asleep |
| 17:00 | 18:00 | Evening | 03:00 next day | Asleep |
| 18:00 | 19:00 | Evening | 04:00 next day | Asleep |
| 19:00 | 20:00 | Evening | 05:00 next day | Asleep |
| 20:00 | 21:00 | Late night | 06:00 next day | Early morning |
| 21:00 | 22:00 | Late night | 07:00 next day | Early morning |
| 22:00 | 23:00 | Late night | 08:00 next day | Early morning |
| 23:00 | 00:00 next day | Asleep | 09:00 next day | Working hours |
Green rows are hours when both cities are inside core working hours (09:00–17:59 local). Amber rows are hours when both are awake but at least one is in the early morning or evening. Times shown are for 27 August 2026; the pattern shifts when either city changes its clocks.
Quick conversions
| When it is… | …it is |
|---|---|
| 09:00 in London | 18:00 in Sydney |
| 12:00 in London | 21:00 in Sydney |
| 15:00 in London | 00:00 next day in Sydney |
| 17:00 in London | 02:00 next day in Sydney |
Daylight saving
London next moves its clocks back on 25 October 2026, to UTC+0. Sydney next moves its clocks forward on 4 October 2026, to UTC+11.
Opposite daylight saving seasons
Both cities change their clocks, but in opposite directions — one is entering summer time as the other leaves it. The gap between them therefore swings across a wider range over the year than a single clock change would produce. Pin recurring meetings to UTC; local time on either side will drift.
Scheduling across this corridor
This is the hardest corridor in regular commercial use. Europe and Oceania are close to twelve hours apart, and because their daylight saving runs in opposite directions the gap moves in both directions across the year. There is no hour at which both sides are comfortably at work. The realistic options are a very early European morning against a late Australian evening, or the reverse, and teams that sustain this corridor almost always rotate the burden rather than fixing a single slot.
About London
London is the practical reference point for global scheduling, sitting at UTC in winter and an hour ahead of it in summer. That is precisely why UTC and London time are not the same thing for most of the year, and why "GMT" used loosely between April and October is usually wrong. British Summer Time runs from the last Sunday in March to the last Sunday in October, on the EU schedule rather than the American one.
About Sydney
Sydney observes daylight saving on the southern-hemisphere schedule, moving forward in October and back in April — the opposite of the northern hemisphere. For part of the year the two hemispheres are both on summer time, and the gap between Sydney and Europe or North America changes twice as much across the year as people expect. Australia is not a single timezone: the eastern states, South Australia and Western Australia all differ, and not all of them observe daylight saving.
Add more cities
This page covers two cities. If your team spans three or more, open the interactive grid — it shows every city's working hours side by side and highlights the columns where everyone overlaps.
◎ Open London and Sydney in the grid
Related time differences
Intl API and were last generated on 27 August 2026. See how we calculate these figures.