London to Anchorage
-9hLondon
BSTSOURCEAnchorage
AKDTGreen rows indicate typical business hours (9 AM - 5 PM)
BST and AKDT on the World Map
The map below highlights the BST (Greenwich Mean Time) and AKDT (Alaska Standard Time) timezone regions across the globe.
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.
AKST – Alaska Standard Time
UTC-09:00Alaska Standard Time (AKST) is the time zone for the state of Alaska, 9 hours behind UTC.
- •Alaska is the largest US state by area but has only about 730,000 residents.
- •Anchorage is the most populous city in AKST with about 290,000 people.
- •The Aleutian Islands use HAST instead of AKST.
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.
About Anchorage
WikipediaAnchorage operates on Alaska Time (AKST/AKDT), UTC-9. As a global air cargo hub, Anchorage connects Asian and American markets via polar routes.
Moose occasionally wander through the city streets.
Time Conversion Guide: London to Anchorage
London runs on British Summer Time (BST) at UTC+01:00, currently observing daylight saving time. Anchorage runs on Alaska Daylight Time (AKDT) at UTC-08:00, also currently on daylight saving time. That puts London 9 hours behind Anchorage — a difference of -9h at the current offsets.
In practice, when it is 9:00 AM in London it is 12:00 AM in Anchorage. Midnight in London is 3:00 PM in Anchorage. Because both zones shift for daylight saving, the gap between them only changes during the few weeks each year when their transition dates differ.
London to Anchorage time conversion table
| London (BST) | Anchorage (AKDT) | Day |
|---|---|---|
| 12:00 AM | 3:00 PM | previous day |
| 6:00 AM | 9:00 PM | previous day |
| 7:00 AM | 10:00 PM | previous day |
| 8:00 AM | 11:00 PM | previous day |
| 9:00 AM | 12:00 AM | same day |
| 12:00 PM | 3:00 AM | same day |
| 3:00 PM | 6:00 AM | same day |
| 5:00 PM | 8:00 AM | same day |
| 6:00 PM | 9:00 AM | same day |
| 9:00 PM | 12:00 PM | same day |
Why people convert London to Anchorage time
- Scheduling a call from London to Anchorage: a 10:00 AM start in London lands at 1:00 AM in Anchorage, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -9h gap: London and Anchorage 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 Anchorage is 12:00 AM in London.
- Keeping family and friends in sync: knowing that 8:00 PM in London is 11:00 AM in Anchorage makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM BST" is unambiguous; "3 PM" across a -9h gap is not.
- With a -9h gap there is no shared 9-to-5 window, so alternate the early start: one week London takes the early slot, the next week Anchorage does.
- London: Clocks fall back on Sun, Oct 25, 2026. Re-check this page after that date because the offset changes and so does the -9h gap.
- Anchorage: Clocks fall back on Sun, Nov 1, 2026. Any meeting series spanning that date will shift by an hour in local time.
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.
About AKST (Alaska Standard Time)
Alaska Standard Time (AKST) is used in nearly all of Alaska. Due to Alaska's vast geographic size, the Aleutian Islands use Hawaii-Aleutian Standard Time instead. During summer months, Alaska switches to Alaska Daylight Time (AKDT, UTC-08:00).
Best time to call between London and Anchorage
With a -9h offset there is no overlap inside a normal 9 AM – 5 PM day. Anchorage opens at 9:00 AM AKDT, which is 12:00 AM in London, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
London and Anchorage have no shared working hours because of the -9h gap. Teams need to alternate early starts or rely on asynchronous handovers.
London is 9 hours behind Anchorage (BST UTC+01:00 → AKDT UTC-08:00). 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
London
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
Anchorage
☀ Currently in DST
Standard: UTC-09:00 · DST: UTC-08:00
Clocks fall back on Sun, Nov 1, 2026
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 London and Anchorage?
London (BST, UTC+01:00) is 9 hours behind Anchorage (AKDT, UTC-08:00). The gap is currently -9h.
How do I convert London time to Anchorage time?
Add -9h to London local time. For example, 9:00 AM in London is 12:00 AM in Anchorage.
What time is it in Anchorage right now?
Anchorage uses AKDT at UTC-08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -9h offset from London.
What is the best time to call Anchorage from London?
There is no shared working-hours window because of the -9h gap. The closest option is 1:00 PM in London, which is 4:00 AM in Anchorage.
Which is behind, London or Anchorage?
London is 9 hours behind Anchorage. When it is 12:00 PM in London it is 3:00 AM in Anchorage.
Do London and Anchorage use different time zones?
London (UK) uses BST at UTC+01:00, while Anchorage (USA) uses AKDT at UTC-08:00. The IANA identifiers are Europe/London and America/Anchorage.
Does daylight saving time affect the London–Anchorage difference?
Both zones observe DST, so the difference stays at -9h for most of the year and only changes during the weeks when their transition dates do not line up.
Which other cities share London's time zone?
BST also covers London, Dublin, Lisbon, Accra, Reykjavik, Edinburgh, Casablanca, Dakar and 5 more.
Which countries use BST, London's zone?
BST is used in United Kingdom, Ireland, Iceland, Portugal (mainland), Ghana, Senegal, Mali, Mauritania and 7 more.
Is there a day difference between London and Anchorage?
Not normally. The -9h gap only pushes the date over the previous day.
What is the time difference between London and Anchorage?
Anchorage is -9h from London.
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 timezone is Anchorage in?
Anchorage operates on Alaska Time (AKST/AKDT), UTC-9. As a global air cargo hub, Anchorage connects Asian and American markets via polar routes.
What are the business hours in London?
Standard business hours in London are 9:00 AM - 5:00 PM GMT.
What are the business hours in Anchorage?
Standard business hours in Anchorage are 8:00 AM - 5:00 PM AKST.
What is the best time to schedule a call between London and Anchorage?
The best overlap for a call is when both cities are in business hours. London works 9:00 AM - 5:00 PM GMT and Anchorage works 8:00 AM - 5:00 PM AKST (-9h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in London and Anchorage?
London uses GBP (£) while Anchorage uses USD ($). Check current exchange rates when planning travel or business between these cities.
How do London and Anchorage compare in size?
London has a population of approximately 8.8 million (metro: 14.8 million), while Anchorage has approximately 287,000 (metro: 398,000).
What are the major landmarks in London and Anchorage?
London is known for Big Ben, Tower Bridge, Buckingham Palace. Anchorage is famous for Anchorage Museum, Tony Knowles Coastal Trail, Flattop Mountain.
Do London and Anchorage have stock exchanges?
Yes. London has the LSE (London Stock Exchange) and Anchorage has the N/A (Uses NYSE/NASDAQ). The -9h time difference affects trading hour overlaps between these exchanges.
Which countries use GMT (Greenwich Mean Time)?
GMT is used in United Kingdom, Ireland, Iceland, Portugal (mainland), Ghana, Senegal, and 9 more countries.
Does GMT observe daylight saving time?
Yes, GMT switches to BST during summer months.
What are some interesting facts about GMT?
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.
Which cities are in the AKST timezone?
Major cities in the AKST timezone include Anchorage, Fairbanks, Juneau, Sitka, Wasilla.
What is the UTC offset for AKST?
Alaska Standard Time (AKST) is at UTC-09:00. During daylight saving time, it shifts to AKDT.
What should I know about the AKST timezone?
Alaska is the largest US state by area but has only about 730,000 residents. Anchorage is the most populous city in AKST with about 290,000 people.
When is it midnight in London, what time is it in Anchorage?
When it is 12:00 AM (midnight) in London (GMT), it is -9h later in Anchorage (AKST).
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