Taipei to Castro Valley time converter

Castro Valley is 15 hours behind Taipei. When it is 9:00 AM in Taipei, it is 6:00 PM (Tue, Oct 20) in Castro Valley.

Taipei CST

Wednesday, October 21, 2026

Castro Valley PDT

Tuesday, October 20, 2026

Taipei
Taiwan
Wed, Oct 21
CSTUTC+8
Castro Valley
California, United States
Tue, Oct 20
PDTUTC-7-15h
Finding your time zone…
Shared working hours (9:00–18:00)

Taipei to Castro Valley conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

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

  • Oct 21, 2026 – Nov 1, 2026: -15h
  • Nov 1, 2026 – Mar 14, 2027: -16h
  • Mar 14, 2027 – Oct 21, 2027: -15h

Distance

Taipei and Castro Valley are 10,388 km (6,455 miles) apart in a straight line.

More conversions

Castro Valley to TaipeiTaipei to New YorkTaipei to LondonTaipei to Los AngelesTaipei to ChicagoTaipei to TorontoTaipei to São PauloTaipei to ParisTaipei to BerlinTaipei to MoscowTaipei to DubaiTaipei to New DelhiTaipei to Bangkok
New York to Castro ValleyLondon to Castro ValleyLos Angeles to Castro ValleyChicago to Castro ValleyToronto to Castro ValleySão Paulo to Castro ValleyParis to Castro ValleyBerlin to Castro ValleyMoscow to Castro ValleyDubai to Castro ValleyNew Delhi to Castro ValleyBangkok to Castro Valley

Questions and answers

What is the time difference between Taipei and Castro Valley?

Castro Valley is 15 hours behind Taipei.

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

When it is 9:00 AM in Taipei, it is 6:00 PM (Tue, Oct 20) in Castro Valley.

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

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

Does the time difference between Taipei and Castro Valley change?

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