Quick answer
9 AM AEST is 11 PM the previous evening in London (GMT). During British Summer Time (BST, UTC+1), 9 AM AEST is midnight the previous day in London. Australian Eastern Standard Time is UTC+10.
How to use this time conversion
The start of the Sydney working day (9 AM AEST) is late evening in London - long outside standard business hours. Australia-UK meetings need to happen at unusual times for at least one side. For most teams, asynchronous workflows supplement the rare live meetings.
What is 9 AM AEST in London?
9 AM AEST is 11 PM GMT the previous evening in London. During BST (UK summer), 9 AM AEST is midnight BST. Australia Eastern Standard Time is UTC+10; during Australian summer (AEDT, UTC+11), 9 AM AEDT is 10 PM GMT.
Why can the answer change?
The answer can change when one location observes daylight saving time and the other does not, or when they switch clocks on different dates.
How do UK and Australian teams manage the time difference?
Most UK-Australia teams use a 7-8 AM London slot (5-6 PM AEST), which requires Australia to stay slightly late. Alternatively, 4-5 PM London (2-3 AM AEST next day) works for a brief early-morning Australia call. Rotating schedule inconvenience is common.
Can I compare this with more people?
Yes. Use the main Meeting Time Finder to add every participant and find the shared working-hours overlap.
Related timezone pages
london sydney · sydney new york · 9am aest in new york · 9am gmt in tokyo