Santo Antonio, Sao Tome and Principe to Istanbul Time Converter

Updating current time…
Santo Antonio
Sao Tome and PrincipeGMT
UTC+0
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Istanbul
TurkeyTRT
UTC+3
3h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

12:00 pm12:00 GMT (UTC+0), Nov 15, 2026 = 3:00 pm15:00 TRT (UTC+3), Nov 15, 2026

Santo Antonio is 3 hours behind Istanbul.

How the time difference changes

Santo Antonio, Sao Tome and Principe is 3 hours behind Istanbul year-round.

Working hours of 9:00 am to 6:00 pm in Santo Antonio, Sao Tome and Principe correspond to 12:00 pm to 9:00 pm in Istanbul.Working hours of 09:00 to 18:00 in Santo Antonio, Sao Tome and Principe correspond to 12:00 to 21:00 in Istanbul.

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

Time Difference

GMT (Greenwich Mean Time) is 3 hours behind TRT (Turkey Time).
12:00 pm12:00 in Santo Antonio, Sao Tome and Principe is 3:00 pm15:00 in Istanbul, Turkey

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

12:00 pm12:00 GMT (Greenwich Mean Time) (Santo Antonio, Sao Tome and Principe). Offset UTC 0:00 hours
3:00 pm15:00 TRT (Turkey Time) (Istanbul, Turkey). Offset UTC +3:00 hours

12:00 pm12:00 Santo Antonio, Sao Tome and Principe / 3:00 pm15:00 Istanbul, Turkey

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
Santo Antonio, Sao Tome and PrincipeIstanbul, Turkey
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Santo Antonio Time Zone and Facts

Time Zone

Abbreviation / Offset
GMT – Greenwich Mean Time, UTC+0 (no daylight saving time)

Santo Antonio Facts

Country
Sao Tome and Principe
Population
1,156
Currency
Dobra (STN)
Geographic Coordinates
1° 38' N Latitude / 7° 25' E Longitude
International Dialing Code
+239
More About Santo Antonio
Santo Antonio 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