AEDT to GMT
-11hAEDT
AEDTSOURCEGMT
GMTGreen rows indicate typical business hours (9 AM - 5 PM)
AEDT and GMT on the World Map
The map below highlights the AEDT (Australian Eastern Daylight Time) and GMT (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.
Time Conversion Guide: AEDT to GMT
AEDT runs on Australian Eastern Daylight Time (AEDT) at UTC+11:00. GMT runs on Greenwich Mean Time (GMT) at UTC+00:00. That puts AEDT 11 hours behind GMT — a difference of -11h at the current offsets.
In practice, when it is 9:00 AM in AEDT it is 10:00 PM in GMT on the previous day. Midnight in AEDT is 1:00 PM in GMT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
AEDT to GMT time conversion table
| AEDT (AEDT) | GMT (GMT) | Day |
|---|---|---|
| 12:00 AM | 1:00 PM | previous day |
| 6:00 AM | 7:00 PM | previous day |
| 7:00 AM | 8:00 PM | previous day |
| 8:00 AM | 9:00 PM | previous day |
| 9:00 AM | 10:00 PM | previous day |
| 12:00 PM | 1:00 AM | same day |
| 3:00 PM | 4:00 AM | same day |
| 5:00 PM | 6:00 AM | same day |
| 6:00 PM | 7:00 AM | same day |
| 9:00 PM | 10:00 AM | same day |
Why people convert AEDT to GMT time
- Scheduling a call from AEDT to GMT: a 10:00 AM start in AEDT lands at 11:00 PM in GMT the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -11h gap: AEDT and GMT 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 GMT is 10:00 PM in AEDT.
- Coordinating a AEDT-based team with GMT contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM AEDT" is unambiguous; "3 PM" across a -11h gap is not.
- With a -11h gap there is no shared 9-to-5 window, so alternate the early start: one week AEDT takes the early slot, the next week GMT does.
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 GMT
With a -11h offset there is no overlap inside a normal 9 AM – 5 PM day. GMT opens at 9:00 AM GMT, which is 10:00 PM in AEDT, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
AEDT and GMT have no shared working hours because of the -11h gap. Teams need to alternate early starts or rely on asynchronous handovers.
AEDT is 11 hours behind GMT (AEDT UTC+11:00 → GMT UTC+00:00). 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
GMT
☀ 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 GMT?
AEDT (AEDT, UTC+11:00) is 11 hours behind GMT (GMT, UTC+00:00). The gap is currently -11h.
How do I convert AEDT time to GMT time?
Add -11h to AEDT local time. For example, 9:00 AM in AEDT is 10:00 PM in GMT (previous day).
What time is it in GMT right now?
GMT uses GMT at UTC+00:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -11h offset from AEDT.
What is the best time to call GMT from AEDT?
There is no shared working-hours window because of the -11h gap. The closest option is 1:00 PM in AEDT, which is 2:00 AM in GMT.
Which is behind, AEDT or GMT?
AEDT is 11 hours behind GMT. When it is 12:00 PM in AEDT it is 1:00 AM in GMT.
Does daylight saving time affect the AEDT–GMT difference?
Neither zone observes daylight saving time, so the -11h offset between AEDT and GMT is fixed all year.
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 GMT?
Not normally. The -11h gap only pushes the date over the previous day.
What is the time difference between AEDT and GMT?
GMT is -11h from AEDT.
What timezone is AEDT in?
AEDT operates on its local timezone.
What timezone is GMT in?
GMT operates on its local timezone.
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 GMT?
When it is 12:00 AM (midnight) in AEDT (AEDT), it is -11h later in GMT (GMT).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More AEDT time conversions
- aedt to sydney
- aedt to aest
- aedt to new york
- aedt to london
- aedt to dubai
- aedt to tokyo
- aedt to singapore
- aedt to los angeles
- aedt to paris
- aedt to delhi
- aedt to mumbai
- aedt to berlin
- aedt to hong kong
- aedt to toronto
- aedt to kathmandu
- new york to aedt
- london to aedt
- dubai to aedt
- tokyo to aedt
- singapore to aedt
- sydney to aedt
- los angeles to aedt
- paris to aedt
- delhi to aedt
- mumbai to aedt
- berlin to aedt
- hong kong to aedt
- toronto to aedt
- kathmandu to aedt
See every conversion from AEDT →·See every conversion from GMT →