London and Sydney: plan a meeting across time zones

The time difference

For most of the year, Sydney is 9 hours ahead of London. That gap does not hold all year — here is how it actually moves:

• 1 January to 28 March: Sydney is 11 hours ahead of London
• 29 March to 4 April: Sydney is 10 hours ahead of London
• 5 April to 3 October: Sydney is 9 hours ahead of London
• 4 October to 24 October: Sydney is 10 hours ahead of London
• 25 October to 31 December: Sydney is 11 hours ahead of London

Best time to meet

London and Sydney do not share a normal working-hours window. The best compromise is 8 AM in London / 5 PM in Sydney — still early or late for whoever is furthest from a normal day, which is the honest trade-off at this distance.

Clock changes to plan around

• London changes clocks — 2026: 29 March and 25 October; 2027: 28 March and 31 October.
• Sydney changes clocks — 2026: 5 April and 4 October; 2027: 4 April and 3 October.

Upcoming public holidays

• 25 December — London: Christmas Day
• 26 December — London: Boxing Day
• 28 December — London: Boxing Day (observed)
• 1 January 2027 — London: New Year's Day
• 25 December — Sydney: Christmas Day
• 26 December — Sydney: Boxing Day
• 1 January 2027 — Sydney: New Year's Day
• 26 January 2027 — Sydney: Australia Day

Holiday data uses country-level public calendars and may miss regional observances or company shutdowns — confirm with your participant if the date matters.

Questions about London and Sydney

What time is it in Sydney when it is 9 AM in London?

For most of the year, 9 AM in London is 6 PM in Sydney (UTC+1 against UTC+10). During the weeks listed above when the gap shifts, it moves by an hour. Open the planner for a specific date.

Does London or Sydney change clocks first?

Both cities observe daylight saving, but not always on the same dates — see the clock-change dates above.

Is there a public holiday in London or Sydney soon?

London: Christmas Day on 25 December. Sydney: Christmas Day on 25 December.