Sydney to London Converter

Standard business hours (9 AM–5 PM, Mon–Fri) in Sydney and London don't overlap on the same weekday. London is 9 hours behind Sydney.

With some flexibility, there’s a workable window outside standard hours:

• 4 PM–8 PM in Sydney (7 AM–11 AM in London) — suggest 6:00 PM Sydney (9:00 AM London).

This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.

Sydney uses Australian Eastern Time (AEST, or AEDT). To call Australia, dial +61.

London uses Greenwich Mean Time (GMT, or BST). To call United Kingdom, dial +44.

London is approximately 10,550 miles northwest of Sydney.

Both zones observe daylight saving time, but they transition on different dates.

Sydney: next transition on Sunday, October 4, 2026.

London: next transition on Sunday, October 25, 2026.

Sydney and London are in opposite hemispheres, so their clocks change in opposite directions about six months apart — one springs forward while the other falls back. The offset between them therefore shifts twice a year and can swing by up to two hours across the seasons, more than a typical same-hemisphere pair. Recurring meetings will need re-checking after each transition.

See the daylight saving time page for transition dates across every time zone.