What is the time difference between London and Sydney?

Sydney is 10 hours ahead of London during GMT/AEDT (UK winter, Australian summer), 11 hours ahead during GMT/AEST (both off DST), and 9 hours ahead during BST/AEST (UK summer, Australian winter). The gap fluctuates because the two countries observe DST in opposite seasons.

When is the best time for a UK-Australia meeting?

The most popular slot is 7:00 AM–8:00 AM GMT (6:00 PM–7:00 PM AEDT) during UK winter, or 8:00 AM–9:00 AM BST (5:00 PM–6:00 PM AEST) during UK summer. Both catch the UK early morning and the Australian late afternoon.

Does Perth have a better overlap with the UK than Sydney?

Yes. Perth (AWST, UTC+8) is only 8 hours ahead of London during GMT, compared to Sydney's 10-11 hours. The overlap during UK working hours is roughly 9 AM–noon GMT (5 PM–8 PM AWST), giving three comfortable hours.

Best Meeting Times Between the UK and Australia

April 23, 2026

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Frequently Asked Questions

What is the time difference between London and Sydney?: Sydney is 10 hours ahead of London during GMT/AEDT (UK winter, Australian summer), 11 hours ahead during GMT/AEST (both off DST), and 9 hours ahead during BST/AEST (UK summer, Australian winter). The gap fluctuates because the two countries observe DST in opposite seasons.
When is the best time for a UK-Australia meeting?: The most popular slot is 7:00 AM–8:00 AM GMT (6:00 PM–7:00 PM AEDT) during UK winter, or 8:00 AM–9:00 AM BST (5:00 PM–6:00 PM AEST) during UK summer. Both catch the UK early morning and the Australian late afternoon.
Does Perth have a better overlap with the UK than Sydney?: Yes. Perth (AWST, UTC+8) is only 8 hours ahead of London during GMT, compared to Sydney's 10-11 hours. The overlap during UK working hours is roughly 9 AM–noon GMT (5 PM–8 PM AWST), giving three comfortable hours.