Updating current time…
IranIRST
UTC+3:30
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9pm
ChinaCST
UTC+8
4h 30m ahead
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Quick answers

Selected conversion

3:30 pm15:30 IRST (UTC+3:30), Oct 27, 2026 = 8:00 pm20:00 CST (UTC+8), Oct 27, 2026

Kolkā Sarā is 4 hours and 30 minutes behind Shanghai.

How the time difference changes

Kolkā Sarā is 4 hours and 30 minutes behind Shanghai year-round.

Working hours of 9:00 am to 6:00 pm in Kolkā Sarā correspond to 1:30 pm to 10:30 pm in Shanghai.Working hours of 09:00 to 18:00 in Kolkā Sarā correspond to 13:30 to 22:30 in Shanghai.

Compare Kolkā Sarā time with Shanghai 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 4 hours and 30 minutes behind CST (China Standard Time).
3:30 pm15:30 in Kolkā Sarā, Iran is 8:00 pm20:00 in Shanghai, China

Kolkā Sarā to Shanghai call time
Best time for a conference call or a meeting is between 9am-1:30pm09:00-13:30 in Kolkā Sarā which corresponds to 1:30pm-6pm13:30-18:00 in Shanghai

3:30 pm15:30 IRST (Iran Standard Time) (Kolkā Sarā, Iran). Offset UTC +3:30 hours
8:00 pm20:00 CST (China Standard Time) (Shanghai, China). Offset UTC +8:00 hours

3:30 pm15:30 Kolkā Sarā, Iran / 8:00 pm20:00 Shanghai, China

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Hourly time comparison
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Kolkā Sarā Time Zone and Facts

Time Zone

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

Kolkā Sarā Facts

Country
Iran
Population
1,118
Currency
Rial (IRR)
Geographic Coordinates
37° 07' N Latitude / 50° 15' E Longitude
International Dialing Code
+98

Shanghai Time Zone and Facts

Time Zone

Abbreviation / Offset
CST – China Standard Time, UTC+8 (no daylight saving time)

Shanghai Facts

Country
China
Alternative Names
SHA, San'nkae, Sanchajus, Sangaj, Sangay, Sanghaj, Sanghay, Sanhaja, Sanhajo, Sanxay, Schanghai, Shang-hai, Shang-hai-shih, Shangai, Shangaj, Shanghai, Shanghai - shang hai, Shanghai - 上海, Shankhaj, Sjanghae, Sjanghai, Sjanghæ, Szanghaj, Thuong Hai, Thượng Hải, Xangai, cankay, sangha'i, sanghae, sanghai, seiynghi, shang hai, shang hai shi, shanghay, shanghhay, shanhai, zhong guo shang hai, Ŝanhajo, Şangay, Şanghay, Şanxay, Šanchajus, Šangaj, Šanghaj, Šanhaja, Σανγκάη, Шангај, Шанхай, שאנגחאי, شانغهاي, شانگهای, شاڭخەي, شاڭخەي شەھىرى, সাংঘাই, சாங்காய், เซี่ยงไฮ้, შანჰაი, 上海, 上海市, 中国上海, 상하이, 상해
Population
24,874,500
Currency
Yuan Renminbi (CNY)
Geographic Coordinates
31° 13' N Latitude / 121° 27' E Longitude
International Dialing Code
+86