Istanbul to Cos Cob Time Converter

Updating current time…
Istanbul
TurkeyTRT
UTC+3
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Cos Cob
Connecticut, USAEDT
UTC−4
7h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Cos Cob's clocks go back 1 hour on Sun, Nov 1 · EDT → EST

Quick answers

Selected conversion

3:00 pm15:00 TRT (UTC+3), Oct 30, 2026 = 8:00 am08:00 EDT (UTC-4), Oct 30, 2026

Istanbul is 7 hours ahead of Cos Cob.

How the time difference changes

For most of the year, Istanbul is 7 hours ahead of Cos Cob. From Nov 1, 2026 to Mar 14, 2027, Istanbul is 8 hours ahead of Cos Cob.

For most of the year, working hours of 9:00 am to 6:00 pm in Istanbul correspond to 2:00 am to 11:00 am in Cos Cob. At other times of the year, working hours of 9:00 am to 6:00 pm in Istanbul correspond to 1:00 am to 10:00 am in Cos Cob.For most of the year, working hours of 09:00 to 18:00 in Istanbul correspond to 02:00 to 11:00 in Cos Cob. At other times of the year, working hours of 09:00 to 18:00 in Istanbul correspond to 01:00 to 10:00 in Cos Cob.

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

Time Difference

TRT (Turkey Time) is 7 hours ahead of EDT (Eastern Daylight Time).
3:00 pm15:00 in Istanbul, Turkey is 8:00 am08:00 in Cos Cob, CT, USA

Istanbul to Cos Cob call time
Best time for a conference call or a meeting is between 4pm-6pm16:00-18:00 in Istanbul which corresponds to 9am-11am09:00-11:00 in Cos Cob

3:00 pm15:00 TRT (Turkey Time) (Istanbul, Turkey). Offset UTC +3:00 hours
8:00 am08:00 EDT (Eastern Daylight Time) (Cos Cob, CT, USA). Offset UTC -4:00 hours

3:00 pm15:00 Istanbul, Turkey / 8:00 am08:00 Cos Cob, CT, USA

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, TurkeyCos Cob, CT, USA
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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

Cos Cob Time Zone and Facts

Time Zone

Abbreviation / Offset
EDT – Eastern Daylight Time, UTC-4 (now, daylight saving time)
EST – Eastern Standard Time, UTC-5 (standard time)
Daylight Saving Time Ends
123456789101112Sunday, November 1, 2026 at 2:00 amSunday, November 1, 2026 at 02:00: clocks go back 1 hour to 1:00 am01:00 (EST). DST ends on the 1st Sunday of November each year. Also called Fall Back or Winter Time.
Daylight Saving Time Starts
123456789101112Sunday, March 14, 2027 at 2:00 amSunday, March 14, 2027 at 02:00: clocks go forward 1 hour to 3:00 am03:00 (EDT). DST starts on the 2nd Sunday of March each year. Also called Spring Forward or Summer Time.
Clock Changes
USA daylight saving time · Clock changes worldwide

Cos Cob Facts

Country
USA
State
Connecticut
Population
6,770
Currency
Dollar (USD)
Geographic Coordinates
41° 02' N Latitude / 73° 35' W Longitude
International Dialing Code
+1
More About Cos Cob
Cos Cob local time and city facts