AEDT to London
-10hAEDT
AEDTSOURCELondon
BSTGreen rows indicate typical business hours (9 AM - 5 PM)
AEDT and BST on the World Map
The map below highlights the AEDT (Australian Eastern Daylight Time) and BST (Greenwich Mean Time) timezone regions across the globe.
AEDT – Australian Eastern Daylight Time
UTC+11:00Australian Eastern Daylight Time (AEDT, UTC+11:00) is the daylight saving period in south-eastern Australia, from October to April.
- •AEDT runs from the first Sunday in October to the first Sunday in April.
- •AEDT is one hour ahead of Australian Eastern Standard Time (AEST).
- •Queensland does not observe daylight saving, so Brisbane stays on AEST.
- •During AEDT, Sydney is 16 hours ahead of New York and 11 hours ahead of UTC.
GMT – Greenwich Mean Time
UTC+00:00Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London. It is the same as UTC+00:00.
- •GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London.
- •The Royal Observatory in Greenwich has been the reference point for GMT since 1884.
- •GMT and UTC are often used interchangeably, but UTC is based on atomic clocks.
- •Iceland uses GMT year-round and never observes daylight saving time.
- •The UK switches from GMT to BST (British Summer Time) in late March each year.
About London
WikipediaLondon, where Greenwich Mean Time (GMT) originates, is the world's leading financial center alongside New York. The city bridges European and American business hours.
Big Ben is actually the name of the bell inside the Elizabeth Tower, not the tower itself.
Understanding the -10h Gap: AEDT vs London
AEDT runs on Australian Eastern Daylight Time (AEDT) at UTC+11:00. London runs on British Summer Time (BST) at UTC+01:00, also currently on daylight saving time. That puts AEDT 10 hours behind London — a difference of -10h at the current offsets.
In practice, when it is 9:00 AM in AEDT it is 11:00 PM in London on the previous day. Midnight in AEDT is 2:00 PM in London.London observes daylight saving time while AEDT does not, so the gap narrows or widens by an hour part of the year.
AEDT to London time conversion table
| AEDT (AEDT) | London (BST) | Day |
|---|---|---|
| 12:00 AM | 2:00 PM | previous day |
| 6:00 AM | 8:00 PM | previous day |
| 7:00 AM | 9:00 PM | previous day |
| 8:00 AM | 10:00 PM | previous day |
| 9:00 AM | 11:00 PM | previous day |
| 12:00 PM | 2:00 AM | same day |
| 3:00 PM | 5:00 AM | same day |
| 5:00 PM | 7:00 AM | same day |
| 6:00 PM | 8:00 AM | same day |
| 9:00 PM | 11:00 AM | same day |
Why people convert AEDT to London time
- Scheduling a call from AEDT to London: a 10:00 AM start in AEDT lands at 12:00 AM in London, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -10h gap: AEDT and London have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in London is 11:00 PM in AEDT.
- Watching a live event or market open: AEDT viewers need 11:00 PM in London to catch a 9:00 AM start there, and 10:00 AM if the event is anchored to AEDT.
- Always state the zone abbreviation, not just the hour. "3:00 PM AEDT" is unambiguous; "3 PM" across a -10h gap is not.
- With a -10h gap there is no shared 9-to-5 window, so alternate the early start: one week AEDT takes the early slot, the next week London does.
- London: Clocks fall back on Sun, Oct 25, 2026. Any meeting series spanning that date will shift by an hour in local time.
About AEDT (Australian Eastern Daylight Time)
Australian Eastern Daylight Time (AEDT) is the daylight saving period in south-eastern Australia, one hour ahead of Australian Eastern Standard Time (AEST, UTC+10:00). Because Australia is in the southern hemisphere, AEDT runs through the summer — from the first Sunday in October to the first Sunday in April — which is almost exactly the reverse of the European and North American schedules. New South Wales, Victoria, Tasmania and the Australian Capital Territory observe it; Queensland and the Northern Territory do not, so Brisbane stays on AEST year round while Sydney moves to AEDT. During AEDT, Sydney is 11 hours ahead of UTC and 16 hours ahead of New York.
About GMT (Greenwich Mean Time)
Greenwich Mean Time (GMT) is the clock time at the Royal Observatory in Greenwich, London, which sits on the Prime Meridian (0° longitude). GMT serves as the reference point from which all other time zones are calculated. The United Kingdom uses GMT during winter months and switches to British Summer Time (BST, UTC+01:00) from late March to late October. Several West African nations use GMT year-round. GMT is often used interchangeably with UTC (Coordinated Universal Time), although technically they are different – UTC is based on atomic clocks while GMT is based on Earth's rotation.
Best time to call between AEDT and London
With a -10h offset there is no overlap inside a normal 9 AM – 5 PM day. London opens at 9:00 AM BST, which is 11:00 PM in AEDT, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
AEDT and London have no shared working hours because of the -10h gap. Teams need to alternate early starts or rely on asynchronous handovers.
AEDT is 10 hours behind London (AEDT UTC+11:00 → BST UTC+01:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
AEDT
❄ Currently in Standard Time
Standard: UTC+10:00 · DST: UTC+11:00
Clocks spring forward on Sat, Oct 3, 2026
London
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
⚠ These locations are currently in different DST states, so the time difference may change when clocks adjust.
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between AEDT and London?
AEDT (AEDT, UTC+11:00) is 10 hours behind London (BST, UTC+01:00). The gap is currently -10h.
How do I convert AEDT time to London time?
Add -10h to AEDT local time. For example, 9:00 AM in AEDT is 11:00 PM in London (previous day).
What time is it in London right now?
London uses BST at UTC+01:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -10h offset from AEDT.
What is the best time to call London from AEDT?
There is no shared working-hours window because of the -10h gap. The closest option is 1:00 PM in AEDT, which is 3:00 AM in London.
Which is behind, AEDT or London?
AEDT is 10 hours behind London. When it is 12:00 PM in AEDT it is 2:00 AM in London.
Do AEDT and London use different time zones?
AEDT uses AEDT at UTC+11:00, while London (UK) uses BST at UTC+01:00. The IANA identifiers are Australia/Sydney and Europe/London.
Does daylight saving time affect the AEDT–London difference?
Yes at the moment: London is on daylight saving time and AEDT is not, so the -10h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share AEDT's time zone?
AEDT also covers Sydney, Melbourne, Canberra, Hobart, Newcastle.
Which countries use AEDT, AEDT's zone?
AEDT is used in Australia (NSW, Victoria, Tasmania, ACT).
Is there a day difference between AEDT and London?
Not normally. The -10h gap only pushes the date over the previous day.
What is the time difference between AEDT and London?
London is -10h from AEDT.
What timezone is AEDT in?
AEDT operates on its local timezone.
What timezone is London in?
London, where Greenwich Mean Time (GMT) originates, is the world's leading financial center alongside New York. The city bridges European and American business hours.
What are the business hours in London?
Standard business hours in London are 9:00 AM - 5:00 PM GMT.
Which countries use AEDT (Australian Eastern Daylight Time)?
AEDT is used in Australia (NSW, Victoria, Tasmania, ACT).
Does AEDT observe daylight saving time?
Yes, AEDT switches to AEDT during summer months.
What are some interesting facts about AEDT?
AEDT runs from the first Sunday in October to the first Sunday in April. AEDT is one hour ahead of Australian Eastern Standard Time (AEST).
Which cities are in the GMT timezone?
Major cities in the GMT timezone include London, Dublin, Lisbon, Accra, Reykjavik, Edinburgh, Casablanca, Dakar.
What is the UTC offset for GMT?
Greenwich Mean Time (GMT) is at UTC+00:00. During daylight saving time, it shifts to BST.
What should I know about the GMT timezone?
GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London. The Royal Observatory in Greenwich has been the reference point for GMT since 1884.
When is it midnight in AEDT, what time is it in London?
When it is 12:00 AM (midnight) in AEDT (AEDT), it is -10h later in London (GMT).
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