🇬🇧 London → 🇦🇺 Sydney
Live time conversion and hour-by-hour comparison
Hour-by-Hour Comparison
Time Difference: London to Sydney
This page shows the live time conversion between London and Sydney. 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.
The Double-DST Challenge
The London-Sydney time difference is uniquely complicated because both cities observe DST — but in opposite seasons. During the northern winter (October-March), London is on GMT and Sydney is on AEDT (UTC+11), creating an 11-hour gap. During northern summer (April-September), London is on BST (UTC+1) and Sydney is on AEST (UTC+10), creating a 9-hour gap. Between these periods, there are transition weeks where the gap is 10 hours. This shifting 9/10/11-hour range requires constant attention.
Australia-UK Business Ties
The historical, cultural, and economic ties between Australia and the UK mean London-Sydney scheduling is a daily necessity for thousands of companies. Major banks (HSBC, Macquarie), mining companies (BHP, Rio Tinto with London listings), and professional services firms span both cities. The UK is also the second-largest source of foreign investment in Australia, making this one of the most important intercity scheduling pairs globally.
Overlap Windows
The practical overlap depends on the season. During northern winter (11-hour gap): 7-8 AM GMT catches 6-7 PM AEDT — morning London meets end-of-day Sydney. During northern summer (9-hour gap): 8-9 AM BST catches 5-6 PM AEST — slightly better but still limited. The consistent strategy: London takes early morning calls, Sydney takes end-of-day calls, and both accept this as the cost of the partnership.
Cricket & Culture
Beyond business, the London-Sydney time difference matters for sports — particularly cricket. Ashes series matches alternate between English and Australian grounds, and fans on the other side must adapt to dramatically different viewing schedules. An 11 AM start in Sydney is midnight in London; a 10:30 AM start in London is 8:30 PM in Sydney. This cultural connection keeps both populations attuned to each other's time zones.
🌍 Popular Cities
🔄 Popular Conversions
Time Zone Details for London And Sydney
Accurate timezone data is critical for scheduling, travel planning, and coordinating across regions. Our converter uses the IANA Time Zone Database, the same authoritative source used by every major operating system and web platform, to ensure the times displayed are consistent with what you see on your devices. Daylight saving transitions are reflected automatically based on the current date.
When planning calls or meetings involving London And Sydney, account for the possibility that DST transitions happen on different dates in different countries. A city pair that is normally 8 hours apart might temporarily be 7 or 9 hours apart during the weeks when one location has transitioned but the other has not. Our converter always shows the current correct offset.
For frequent timezone conversions, bookmark this page for instant access. The conversion updates automatically each time you visit, reflecting any changes in DST status or timezone rules since your last visit. You can also use our meeting planner tool to find overlapping business hours across multiple zones simultaneously.