Live time conversion and hour-by-hour comparison
This page shows the live time conversion between Sydney and London. The hour-by-hour chart above makes it easy to find overlapping business hours for meetings or calls. Green highlights indicate standard business hours (9 AM – 5 PM) in each city.
Sydney to London (the reverse direction of London to Sydney) presents the same 10-11 hour challenge from the Australian perspective. The key difference in practice: Sydney-based professionals typically take early morning calls (6-8 AM AEST/AEDT) to catch London in their afternoon (3-5 PM GMT), while London-based teams reciprocate with occasional late-evening calls.
The UK and Australia maintain deep business, cultural, and political ties dating back centuries. Regular scheduling between London and Sydney is essential for the legal profession (Australian law derives from English common law), mining (BHP and Rio Tinto maintain London listings), and financial services. The Commonwealth relationship keeps institutional ties strong despite the challenging time gap.
Sydney-based teams working with London counterparts often adopt an 'early bird' schedule — starting at 6-7 AM AEST to create overlap with London's afternoon. Some firms maintain dedicated 'London hours' team members who work shifted schedules. The alternative: embrace asynchronous workflows with a daily 30-minute overlap standup, supplemented by detailed written handoffs.
Because Australia and the UK observe DST in opposite seasons, the gap varies throughout the year: 11 hours in northern winter (GMT/AEDT), 9 hours in northern summer (BST/AEST), and 10 hours during transition periods. Sydney-based professionals should keep a running note of the current London offset rather than relying on memory, as it changes four times per year.