Tokyo to Castro Valley time converter

Castro Valley is 16 hours behind Tokyo. When it is 9:00 AM in Tokyo, it is 5:00 PM (Mon, Oct 19) in Castro Valley.

Tokyo JST

Tuesday, October 20, 2026

Castro Valley PDT

Monday, October 19, 2026

Tokyo
Japan
Tue, Oct 20
JSTUTC+9
Castro Valley
California, United States
Mon, Oct 19
PDTUTC-7-16h
Finding your time zone…
Shared working hours (9:00–18:00)

Tokyo to Castro Valley conversion table

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

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

Best time to call or meet

Both sides are at work from 9:00 AM – 10:00 AM in Tokyo (5:00 PM – 6:00 PM in Castro Valley).

Daylight saving time and the difference

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

  • Oct 20, 2026 – Nov 1, 2026: -16h
  • Nov 1, 2026 – Mar 14, 2027: -17h
  • Mar 14, 2027 – Oct 20, 2027: -16h

Distance

Tokyo and Castro Valley are 8,300 km (5,157 miles) apart in a straight line.

More conversions

Castro Valley to TokyoTokyo to New YorkTokyo to LondonTokyo to Los AngelesTokyo to ChicagoTokyo to TorontoTokyo to São PauloTokyo to ParisTokyo to BerlinTokyo to MoscowTokyo to DubaiTokyo to New DelhiTokyo 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 Tokyo and Castro Valley?

Castro Valley is 16 hours behind Tokyo.

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

When it is 9:00 AM in Tokyo, it is 5:00 PM (Mon, Oct 19) in Castro Valley.

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

Both sides are at work from 9:00 AM – 10:00 AM in Tokyo (5:00 PM – 6:00 PM in Castro Valley).

Does the time difference between Tokyo 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.