Istanbul to WET
-3hIstanbul
TRTSOURCEWET
WETGreen rows indicate typical business hours (9 AM - 5 PM)
TRT and WET on the World Map
The map below highlights the TRT (Turkey Time) and WET (Western European Time) timezone regions across the globe.
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.
WET – Western European Time
UTC+00:00Western European Time (WET) is the time zone for Portugal, Morocco, and the Canary Islands, same as UTC+00:00.
- •Portugal is the only mainland European country in the WET time zone.
- •The Canary Islands are on WET despite being part of Spain (which uses CET).
- •WET is identical to GMT and UTC+00:00.
About Istanbul
WikipediaIstanbul operates on Turkey Time (TRT), UTC+3 year-round. As a transcontinental city, Istanbul bridges European and Asian business hours.
The Grand Bazaar is one of the world's oldest and largest covered markets with 4,000+ shops.
Understanding the -3h Gap: Istanbul vs WET
Istanbul runs on Türkiye Standard Time (TRT) at UTC+03:00. WET runs on Western European Time (WET) at UTC+00:00. That puts Istanbul 3 hours behind WET — a difference of -3h at the current offsets.
In practice, when it is 9:00 AM in Istanbul it is 6:00 AM in WET. Midnight in Istanbul is 9:00 PM in WET. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Istanbul to WET time conversion table
| Istanbul (TRT) | WET (WET) | Day |
|---|---|---|
| 12:00 AM | 9:00 PM | previous day |
| 6:00 AM | 3:00 AM | same day |
| 7:00 AM | 4:00 AM | same day |
| 8:00 AM | 5:00 AM | same day |
| 9:00 AM | 6:00 AM | same day |
| 12:00 PM | 9:00 AM | same day |
| 3:00 PM | 12:00 PM | same day |
| 5:00 PM | 2:00 PM | same day |
| 6:00 PM | 3:00 PM | same day |
| 9:00 PM | 6:00 PM | same day |
Why people convert Istanbul to WET time
- Scheduling a call from Istanbul to WET: a 10:00 AM start in Istanbul lands at 7:00 AM in WET, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Istanbul and WET are inside the 9-to-5 working day between 12:00 PM and 5:00 PM TRT time (9:00 AM–2:00 PM WET). That is roughly 5 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in Istanbul is 5:00 PM in WET makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM TRT" is unambiguous; "3 PM" across a -3h gap is not.
- Block 12:00 PM–5:00 PM TRT as the recurring meeting window if you work primarily from Istanbul and need WET colleagues present.
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.
About WET (Western European Time)
Western European Time (WET) is used in Portugal, the Canary Islands (Spain), Morocco, and several other locations. It is equivalent to GMT/UTC. During summer, Portugal and the Canary Islands switch to WEST (Western European Summer Time, UTC+01:00).
Best time to call between Istanbul and WET
Both Istanbul and WET sit inside the 9 AM – 5 PM working day between 12:00 PM–5:00 PM TRT, which is 9:00 AM–2:00 PM WET. That gives roughly 5 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Istanbul and WET share 5 hours of working-hours overlap (12:00 PM–5:00 PM TRT), so scheduling a live meeting is straightforward.
Istanbul is 3 hours behind WET (TRT UTC+03:00 → WET UTC+00:00). The shared working window is 12:00 PM–5:00 PM TRT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Istanbul
Does not observe DST
WET
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 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 Istanbul and WET?
Istanbul (TRT, UTC+03:00) is 3 hours behind WET (WET, UTC+00:00). The gap is currently -3h.
How do I convert Istanbul time to WET time?
Add -3h to Istanbul local time. For example, 9:00 AM in Istanbul is 6:00 AM in WET.
What time is it in WET right now?
WET uses WET at UTC+00:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -3h offset from Istanbul.
What is the best time to call WET from Istanbul?
Call between 12:00 PM and 5:00 PM TRT — that maps to 9:00 AM–2:00 PM WET and keeps both parties inside the working day.
Which is behind, Istanbul or WET?
Istanbul is 3 hours behind WET. When it is 12:00 PM in Istanbul it is 9:00 AM in WET.
Do Istanbul and WET use different time zones?
Istanbul (Turkey) uses TRT at UTC+03:00, while WET uses WET at UTC+00:00. The IANA identifiers are Europe/Istanbul and Europe/Lisbon.
Does daylight saving time affect the Istanbul–WET difference?
Neither zone observes daylight saving time, so the -3h offset between Istanbul and WET is fixed all year.
Which other cities share Istanbul's time zone?
TRT also covers Istanbul, Ankara, Izmir, Bursa, Antalya.
Which countries use TRT, Istanbul's zone?
TRT is used in Turkey.
Is there a day difference between Istanbul and WET?
Not normally. The -3h gap only pushes the date over the previous day.
What is the time difference between Istanbul and WET?
WET is -3h from Istanbul.
What timezone is Istanbul in?
Istanbul operates on Turkey Time (TRT), UTC+3 year-round. As a transcontinental city, Istanbul bridges European and Asian business hours.
What timezone is WET in?
WET operates on its local timezone.
What are the business hours in Istanbul?
Standard business hours in Istanbul are 9:00 AM - 6:00 PM TRT.
Which countries use TRT (Turkey Time)?
TRT is used in Turkey.
Does TRT observe daylight saving time?
No, TRT does not observe daylight saving time and remains at UTC+03:00 year-round.
What are some interesting facts about TRT?
Turkey has used a permanent UTC+03:00 since September 2016. TRT is level with Moscow Standard Time and Arabia Standard Time all year.
Which cities are in the WET timezone?
Major cities in the WET timezone include Lisbon, Porto, Casablanca, Las Palmas, Funchal, Rabat.
What is the UTC offset for WET?
Western European Time (WET) is at UTC+00:00. During daylight saving time, it shifts to WEST.
What should I know about the WET timezone?
Portugal is the only mainland European country in the WET time zone. The Canary Islands are on WET despite being part of Spain (which uses CET).
When is it midnight in Istanbul, what time is it in WET?
When it is 12:00 AM (midnight) in Istanbul (TRT), it is -3h later in WET (WET).
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