London to TRT
+2hLondon
BSTSOURCETRT
TRTGreen rows indicate typical business hours (9 AM - 5 PM)
BST and TRT on the World Map
The map below highlights the BST (Greenwich Mean Time) and TRT (Turkey 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.
TRT – Turkey Time
UTC+03:00Turkey Time (TRT, UTC+03:00) is the single time zone used across Turkey, fixed year round since 2016.
- •Turkey has used a permanent UTC+03:00 since September 2016.
- •TRT is level with Moscow Standard Time and Arabia Standard Time all year.
- •Because Turkey kept summer time permanently, western cities see very late winter sunrises.
- •Turkey previously observed daylight saving time from 1973 to 2016.
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.
Time Conversion Guide: London to TRT
London runs on British Summer Time (BST) at UTC+01:00, currently observing daylight saving time. TRT runs on Turkey Time (TRT) at UTC+03:00. That puts London 2 hours ahead of TRT — a difference of +2h at the current offsets.
In practice, when it is 9:00 AM in London it is 11:00 AM in TRT. Midnight in London is 2:00 AM in TRT.London observes daylight saving time while TRT does not, so the gap narrows or widens by an hour part of the year.
London to TRT time conversion table
| London (BST) | TRT (TRT) | Day |
|---|---|---|
| 12:00 AM | 2:00 AM | same day |
| 6:00 AM | 8:00 AM | same day |
| 7:00 AM | 9:00 AM | same day |
| 8:00 AM | 10:00 AM | same day |
| 9:00 AM | 11:00 AM | same day |
| 12:00 PM | 2:00 PM | same day |
| 3:00 PM | 5:00 PM | same day |
| 5:00 PM | 7:00 PM | same day |
| 6:00 PM | 8:00 PM | same day |
| 9:00 PM | 11:00 PM | same day |
Why people convert London to TRT time
- Scheduling a call from London to TRT: a 10:00 AM start in London lands at 12:00 PM in TRT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both London and TRT are inside the 9-to-5 working day between 9:00 AM and 3:00 PM BST time (11:00 AM–5:00 PM TRT). That is roughly 6 hours of usable overlap.
- Coordinating a London-based team with TRT 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 BST" is unambiguous; "3 PM" across a +2h gap is not.
- Block 9:00 AM–3:00 PM BST as the recurring meeting window if you work primarily from London and need TRT colleagues present.
- London: Clocks fall back on Sun, Oct 25, 2026. Re-check this page after that date because the offset changes and so does the +2h gap.
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 TRT (Turkey Time)
Turkey Time (TRT) is fixed at UTC+03:00 all year. Turkey abolished seasonal clock changes in September 2016, moving to a permanent UTC+03:00 so the whole country stays on what was formerly summer time. That leaves Istanbul, which sits close to 29°E, on an offset well ahead of its solar time — sunrise in mid-winter comes after 08:30 local. TRT shares its offset with Moscow Standard Time, Arabia Standard Time and East Africa Time, so Istanbul is level with Moscow and Riyadh all year and one hour ahead of Central European Time during the European winter.
Best time to call between London and TRT
Both London and TRT sit inside the 9 AM – 5 PM working day between 9:00 AM–3:00 PM BST, which is 11:00 AM–5:00 PM TRT. That gives roughly 6 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
London and TRT share 6 hours of working-hours overlap (9:00 AM–3:00 PM BST), so scheduling a live meeting is straightforward.
London is 2 hours ahead of TRT (BST UTC+01:00 → TRT UTC+03:00). The shared working window is 9:00 AM–3:00 PM BST. 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
TRT
Does not observe DST
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 TRT?
London (BST, UTC+01:00) is 2 hours ahead of TRT (TRT, UTC+03:00). The gap is currently +2h.
How do I convert London time to TRT time?
Add +2h to London local time. For example, 9:00 AM in London is 11:00 AM in TRT.
What time is it in TRT right now?
TRT uses TRT at UTC+03:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +2h offset from London.
What is the best time to call TRT from London?
Call between 9:00 AM and 3:00 PM BST — that maps to 11:00 AM–5:00 PM TRT and keeps both parties inside the working day.
Which is ahead, London or TRT?
London is 2 hours ahead of TRT. When it is 12:00 PM in London it is 2:00 PM in TRT.
Do London and TRT use different time zones?
London (UK) uses BST at UTC+01:00, while TRT uses TRT at UTC+03:00. The IANA identifiers are Europe/London and Europe/Istanbul.
Does daylight saving time affect the London–TRT difference?
Yes at the moment: London is on daylight saving time and TRT is not, so the +2h gap shifts by an hour when exactly one of them changes clocks.
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 TRT?
Not normally. The +2h gap only pushes the date over for late-evening times.
What is the time difference between London and TRT?
TRT is +2h 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 TRT in?
TRT operates on its local timezone.
What are the business hours in London?
Standard business hours in London are 9:00 AM - 5:00 PM GMT.
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 TRT timezone?
Major cities in the TRT timezone include Istanbul, Ankara, Izmir, Bursa, Antalya.
What is the UTC offset for TRT?
Turkey Time (TRT) is at UTC+03:00.
What should I know about the TRT timezone?
Turkey has used a permanent UTC+03:00 since September 2016. TRT is level with Moscow Standard Time and Arabia Standard Time all year.
When is it midnight in London, what time is it in TRT?
When it is 12:00 AM (midnight) in London (GMT), it is +2h later in TRT (TRT).
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