Istanbul to City of Westminster Time Converter

Updating current time…
Istanbul
TurkeyTRT
UTC+3
12am
3am
6am
9am
12pm
3pm
6pm
9pm
City of Westminster
United KingdomGMT
UTC+0
3h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

3:00 pm15:00 TRT (UTC+3), Nov 1, 2026 = 12:00 pm12:00 GMT (UTC+0), Nov 1, 2026

Istanbul is 3 hours ahead of City of Westminster.

How the time difference changes

For most of the year, Istanbul is 2 hours ahead of City of Westminster. From Oct 25, 2026 to Mar 28, 2027, and from Oct 31, 2027 to Mar 26, 2028, Istanbul is 3 hours ahead of City of Westminster.

For most of the year, working hours of 9:00 am to 6:00 pm in Istanbul correspond to 7:00 am to 4:00 pm in City of Westminster. At other times of the year, working hours of 9:00 am to 6:00 pm in Istanbul correspond to 6:00 am to 3:00 pm in City of Westminster.For most of the year, working hours of 09:00 to 18:00 in Istanbul correspond to 07:00 to 16:00 in City of Westminster. At other times of the year, working hours of 09:00 to 18:00 in Istanbul correspond to 06:00 to 15:00 in City of Westminster.

Compare Istanbul time with City of Westminster time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

TRT (Turkey Time) is 3 hours ahead of GMT (Greenwich Mean Time).
3:00 pm15:00 in Istanbul, Turkey is 12:00 pm12:00 in City of Westminster, United Kingdom

Istanbul to City of Westminster call time
Best time for a conference call or a meeting is between 12pm-6pm12:00-18:00 in Istanbul which corresponds to 9am-3pm09:00-15:00 in City of Westminster

3:00 pm15:00 TRT (Turkey Time) (Istanbul, Turkey). Offset UTC +3:00 hours
12:00 pm12:00 GMT (Greenwich Mean Time) (City of Westminster, United Kingdom). Offset UTC 0:00 hours

3:00 pm15:00 Istanbul, Turkey / 12:00 pm12:00 City of Westminster, United Kingdom

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
Istanbul, TurkeyCity of Westminster, United Kingdom
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Istanbul Time Zone and Facts

Time Zone

Abbreviation / Offset
TRT – Turkey Time, UTC+3 (no daylight saving time)

Istanbul Facts

Country
Turkey
Alternative Names
Bizanc, Bizánc, Byzance, Byzantion, Byzantium, Byzanz, Constantinoble, Constantinopla, Constantinople, Constantinopolen, Constantinopoli, Constantinopolis, Costantinopoli, Estambul, IST, Istamboul, Istambul, Istambuł, Istampoul, Istanbul, Istanbúl, Isztambul, Konstantinapoly, Konstantinopel, Konstantinopolo, Konstantinoupoli, Konstantinoupolis, Konstantinápoly, Kustantiniyah, Micklagard, Micklagård, Mikligardur, Mikligarður, Stamboul, Stambul, Stambula, Stambuł, Tsarigrad, Vizantija (Vizantija), Vyzantio, astnbwl, bijantium, byuzantion, byzntywn, iseutanbul, istambula, isutanburu, stin Poli [stimˈboli], yi si tan bu er, İstanbul, Βυζάντιο, Βυζαντιο, Ισταμπουλ, Ισταμπούλ, Κωνσταντινουπολη, Κωνσταντινούπολη, Κωνσταντινούπολις, στην Πόλι [stimˈboli], Византија (Vizantija), Истанбул, Стамбул, ביזנטיון, اسطنبول, इस्तांबुल, ইস্তাম্বুল, イスタンブール, ビュザンティオン, 伊斯坦布尔, 비잔티움, 이스탄불
Population
15,701,602
Currency
Lira (TRY)
Geographic Coordinates
41° 00' N Latitude / 28° 56' E Longitude
International Dialing Code
+90
More About Istanbul
Istanbul local time and city facts
Current Time in Turkey
Turkey time now

City of Westminster Time Zone and Facts

Time Zone

Abbreviation / Offset
GMT – Greenwich Mean Time, UTC+0 (now)
BST – British Summer Time, UTC+1 (daylight saving time)
Daylight Saving Time Starts
123456789101112Sunday, March 28, 2027 at 1:00 amSunday, March 28, 2027 at 01:00: clocks go forward 1 hour to 2:00 am02:00 (BST). DST starts on the last Sunday of March each year. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
123456789101112Sunday, October 31, 2027 at 2:00 amSunday, October 31, 2027 at 02:00: clocks go back 1 hour to 1:00 am01:00 (GMT). DST ends on the last Sunday of October each year. Also called Fall Back or Winter Time.
Clock Changes
United Kingdom daylight saving time · Clock changes worldwide

City of Westminster Facts

Country
United Kingdom
Alternative Names
Westminster
Population
247,614
Currency
Pound (GBP)
Geographic Coordinates
51° 29' N Latitude / 0° 08' W Longitude
International Dialing Code
+44
More About City of Westminster
City of Westminster local time and city facts
Current Time in the United Kingdom
UK time now