London to Sydney Time

London to Sydney conversion chart

Every full hour of Tuesday, October 13, 2026 in London, and the time in Sydney. Pick another date in the converter and the chart follows.

Time difference over the year

The gap between London and Sydney for the next 12 months, with clock changes on both sides taken into account:

• Oct 13, 2026 to Oct 24, 2026: Sydney is 10 hours ahead of London
• Oct 25, 2026 to Mar 27, 2027: Sydney is 11 hours ahead of London
• Mar 28, 2027 to Apr 3, 2027: Sydney is 10 hours ahead of London
• Apr 4, 2027 to Oct 2, 2027: Sydney is 9 hours ahead of London
• Oct 3, 2027 to Oct 12, 2027: Sydney is 10 hours ahead of London

Daylight saving time in London and Sydney

London turns the clocks forward from GMT to BST at 1:00 AM on the last Sunday in March and back at 2:00 AM on the last Sunday in October, the dates the UK government publishes. In 2026 the changes fall on March 29 and October 25, in 2027 on March 28 and October 31.

Sydney turns the clocks forward from AEST to AEDT at 2:00 AM on the first Sunday in October and back at 3:00 AM on the first Sunday in April, the dates New South Wales, Victoria, South Australia, Tasmania and the ACT share, while Queensland, Western Australia and the Northern Territory do not change their clocks. In 2026 the changes fall on April 5 and October 4, in 2027 on April 4 and October 3.

The gap takes 3 values across 2026 and 2027: 11 hours, 10 hours, 9 hours. 9 hours holds on most days; the highlighted rows are the 366 days with another gap, because one side has changed its clocks and the other has not:

Office hours that overlap

With a 9:00 AM to 5:00 PM workday in both cities, this is the shared window for each gap of the year:

• 11 hours apart (GMT with AEDT), 155 days of 2026: No shared office time. When London starts work at 9:00 AM, it is 8:00 PM in Sydney; when Sydney starts at 9:00 AM, it is 10:00 PM the day before in London.
• 10 hours apart (BST with AEDT), 28 days of 2026: No shared office time. When London starts work at 9:00 AM, it is 7:00 PM in Sydney; when Sydney starts at 9:00 AM, it is 11:00 PM the day before in London.
• 9 hours apart (BST with AEST), 182 days of 2026: No shared office time. When London starts work at 9:00 AM, it is 6:00 PM in Sydney; when Sydney starts at 9:00 AM, it is 12:00 AM in London.

Which time zones London and Sydney use

London is on UK time (GMT in winter, BST in summer), which is used in the whole United Kingdom. Sydney is on Australian Eastern Time (AEST in winter, AEDT in summer), used in New South Wales, Victoria, Tasmania and the ACT with daylight saving, and in Queensland without it.

Comparing more than two places? Add as many cities as you need in the time zone converter, or find a slot that works for everyone with the meeting planner. For timestamps from logs or APIs, the Unix timestamp converter turns them into readable dates.

Sources

The clock change rules above come from these pages. The dates, the gap table and the office hours are computed from them and checked against the time zone data at build time.

• GOV.UK: When do the clocks change?
• NSW Government: Daylight saving
• timeanddate.com: Daylight Saving Time in Australia

More city pairs

• London to New York
• New York to London
• London to Dubai
• Dubai to London
• London to Sydney
• Sydney to London
• London to Tokyo
• Tokyo to London
• London to Los Angeles
• Los Angeles to London
• New York to Tokyo
• Tokyo to New York
• New York to Los Angeles
• Los Angeles to New York
• New York to Sydney
• Sydney to New York
• New York to Dubai
• Dubai to New York
• Los Angeles to Sydney
• Sydney to Los Angeles
• London to Singapore
• London to Hong Kong
• London to Mumbai
• London to Johannesburg
• London to Toronto
• London to Paris
• New York to Singapore
• New York to Hong Kong
• New York to Mumbai
• New York to Paris
• New York to Toronto
• New York to Mexico City
• New York to São Paulo
• Los Angeles to Tokyo
• Chicago to London
• Tokyo to Sydney
• Sydney to Auckland
• Singapore to Sydney
• Dubai to Mumbai
• Madrid to Mexico City

Built by Tobias Kurth, designer. Updated October 13, 2026.

Frequently asked questions