Castro Valley to Shanghai time converter

Shanghai is 15 hours ahead of Castro Valley. When it is 9:00 AM in Castro Valley, it is 12:00 AM (Tue, Oct 20) in Shanghai.

Castro Valley PDT

Monday, October 19, 2026

Shanghai CST

Tuesday, October 20, 2026

Castro Valley
California, United States
Mon, Oct 19
PDTUTC-7
Shanghai
China
Tue, Oct 20
CSTUTC+8+15h
Finding your time zone…
Shared working hours (9:00–18:00)

Castro Valley to Shanghai conversion table

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

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

Best time to call or meet

Working hours don't overlap fully. The closest fit is 4:00 PM – 6:00 PM in Castro Valley (7:00 AM – 9:00 AM in Shanghai): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference changes during the year because Castro Valley and Shanghai switch clocks on different dates:

  • Oct 19, 2026 – Nov 1, 2026: +15h
  • Nov 1, 2026 – Mar 14, 2027: +16h
  • Mar 14, 2027 – Oct 19, 2027: +15h

Distance

Castro Valley and Shanghai are 9,909 km (6,157 miles) apart in a straight line.

More conversions

Shanghai to Castro ValleyCastro Valley to New YorkCastro Valley to LondonCastro Valley to Los AngelesCastro Valley to ChicagoCastro Valley to TorontoCastro Valley to São PauloCastro Valley to ParisCastro Valley to BerlinCastro Valley to MoscowCastro Valley to DubaiCastro Valley to New DelhiCastro Valley 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 Castro Valley and Shanghai?

Shanghai is 15 hours ahead of Castro Valley.

What time is it in Shanghai when it is 9 AM in Castro Valley?

When it is 9:00 AM in Castro Valley, it is 12:00 AM (Tue, Oct 20) in Shanghai.

When is the best time to call Shanghai from Castro Valley?

Working hours don't overlap fully. The closest fit is 4:00 PM – 6:00 PM in Castro Valley (7:00 AM – 9:00 AM in Shanghai): working hours on one side, early or late on the other.

Does the time difference between Castro Valley and Shanghai change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.