San Juan to Shanghai time converter

Shanghai is 12 hours ahead of San Juan. When it is 9:00 AM in San Juan, it is 9:00 PM in Shanghai.

San Juan AST

Friday, October 16, 2026

Shanghai CST

Saturday, October 17, 2026

San Juan
Puerto Rico
Fri, Oct 16
ASTUTC-4
Shanghai
China
Sat, Oct 17
CSTUTC+8+12h
Finding your time zone…
Shared working hours (9:00–18:00)

San Juan to Shanghai conversion table

Every hour of today in San Juan and the matching time in Shanghai. Light rows are typical working hours (9:00–18:00).

San JuanShanghai
12:00 AM12:00 PM
1:00 AM1:00 PM
2:00 AM2:00 PM
3:00 AM3:00 PM
4:00 AM4:00 PM
5:00 AM5:00 PM
6:00 AM6:00 PM
7:00 AM7:00 PM
8:00 AM8:00 PM
9:00 AM9:00 PM
10:00 AM10:00 PM
11:00 AM11:00 PM
12:00 PM12:00 AM+1 day
1:00 PM1:00 AM+1 day
2:00 PM2:00 AM+1 day
3:00 PM3:00 AM+1 day
4:00 PM4:00 AM+1 day
5:00 PM5:00 AM+1 day
6:00 PM6:00 AM+1 day
7:00 PM7:00 AM+1 day
8:00 PM8:00 AM+1 day
9:00 PM9:00 AM+1 day
10:00 PM10:00 AM+1 day
11:00 PM11:00 AM+1 day

Best time to call or meet

Working hours don't overlap fully. The closest fit is 9:00 AM – 10:00 AM in San Juan (9:00 PM – 10:00 PM in Shanghai): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference stays 12 hours all year.

Distance

San Juan and Shanghai are 14,431 km (8,967 miles) apart in a straight line.

More conversions

Shanghai to San JuanSan Juan to New YorkSan Juan to LondonSan Juan to Los AngelesSan Juan to ChicagoSan Juan to TorontoSan Juan to São PauloSan Juan to ParisSan Juan to BerlinSan Juan to MoscowSan Juan to DubaiSan Juan to New DelhiSan Juan to Bangkok
New York to ShanghaiLondon to ShanghaiLos Angeles to ShanghaiChicago to ShanghaiToronto to ShanghaiSão Paulo to ShanghaiParis to ShanghaiBerlin to ShanghaiMoscow to ShanghaiDubai to ShanghaiNew Delhi to ShanghaiBangkok to Shanghai

Questions and answers

What is the time difference between San Juan and Shanghai?

Shanghai is 12 hours ahead of San Juan.

What time is it in Shanghai when it is 9 AM in San Juan?

When it is 9:00 AM in San Juan, it is 9:00 PM in Shanghai.

When is the best time to call Shanghai from San Juan?

Working hours don't overlap fully. The closest fit is 9:00 AM – 10:00 AM in San Juan (9:00 PM – 10:00 PM in Shanghai): working hours on one side, early or late on the other.

Does the time difference between San Juan and Shanghai change?

No. The difference stays 12 hours all year.