Oshtorīnān to Istanbul Time Converter

Updating current time…
Oshtorīnān
IranIRST
UTC+3:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Istanbul
TurkeyTRT
UTC+3
30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

3:30 pm15:30 IRST (UTC+3:30), Oct 27, 2026 = 3:00 pm15:00 TRT (UTC+3), Oct 27, 2026

Oshtorīnān is 30 minutes ahead of Istanbul.

How the time difference changes

Oshtorīnān is 30 minutes ahead of Istanbul year-round.

Working hours of 9:00 am to 6:00 pm in Oshtorīnān correspond to 8:30 am to 5:30 pm in Istanbul.Working hours of 09:00 to 18:00 in Oshtorīnān correspond to 08:30 to 17:30 in Istanbul.

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

Time Difference

IRST (Iran Standard Time) is 30 minutes ahead of TRT (Turkey Time).
3:30 pm15:30 in Oshtorīnān, Iran is 3:00 pm15:00 in Istanbul, Turkey

Oshtorīnān to Istanbul call time
Best time for a conference call or a meeting is between 9:30am-6pm09:30-18:00 in Oshtorīnān which corresponds to 9am-5:30pm09:00-17:30 in Istanbul

3:30 pm15:30 IRST (Iran Standard Time) (Oshtorīnān, Iran). Offset UTC +3:30 hours
3:00 pm15:00 TRT (Turkey Time) (Istanbul, Turkey). Offset UTC +3:00 hours

3:30 pm15:30 Oshtorīnān, Iran / 3:00 pm15:00 Istanbul, Turkey

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Hourly time comparison
Oshtorīnān, IranIstanbul, Turkey
11:30pm previous day
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23:30 previous day
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Oshtorīnān Time Zone and Facts

Time Zone

Abbreviation / Offset
IRST – Iran Standard Time, UTC+3:30 (no daylight saving time)

Oshtorīnān Facts

Country
Iran
Population
5,520
Currency
Rial (IRR)
Geographic Coordinates
34° 01' N Latitude / 48° 38' E Longitude
International Dialing Code
+98
More About Oshtorīnān
Oshtorīnān local time and city facts

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