London ↔ Sydney
Best Time to Call
These cities have challenging overlap; use our slider to find a slot.
Sync London and Sydney easily. London is 11 hours behind Sydney. These cities have challenging overlap; use our slider to find a slot.
Upcoming Time Change
- New York City clocks forward 1h in 11 days Mar 08
💡 Review recurring meetings scheduled during these dates to avoid sync issues.
Meeting Optimizer
Sync Score
3.3/10
-12h Current Time +12h
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Tokyo
13:39 GMT+9
Working
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New York City
23:39 EST
Sleeping
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London
04:39 GMT
Sleeping
Synchronization Context
Operating on opposite sides of the clock, these cities have virtually no overlapping business hours. Expect a 24-hour turnaround for most communications.
London Business Pulse
- Culture London business culture is generally formal but collaborative. "Flexi-Fridays" are common in the summer.
- Lunch Break Typically 1:00 PM - 2:00 PM.
- Pro Tip Avoid calling after 4:30 PM on Fridays as many offices wind down early for the weekend. Mid-week (Tuesday to Thursday) between 10 AM and 4 PM is the "Golden Window" for reaching decision-makers. Always start with a brief polite inquiry about their day before diving into business.
Sydney Business Pulse
- Culture Relatively relaxed but professional. Early starts are common to maximize daylight.
- Lunch Break 12:00 PM - 1:00 PM.
- Pro Tip Due to the significant time difference with Europe and the US, early mornings (8:30 AM - 10:00 AM) are often dedicated to international syncs. For domestic calls, late mornings are best. Be mindful that many Australians start and end their day earlier than their Northern Hemisphere counterparts.
Quick Comparison
| Feature | London | Sydney |
|---|---|---|
| Timezone | Europe/London | Australia/Sydney |
| Country | UK | Australia |
| Coordinates | 51.51, -0.13 | -33.87, 151.21 |
| Population | 9,648,000 | 5,121,000 |