Castro Valley to Tokyo time converter

Tokyo is 16 hours ahead of Castro Valley. When it is 9:00 AM in Castro Valley, it is 1:00 AM (Tue, Oct 20) in Tokyo.

Castro Valley PDT

Monday, October 19, 2026

Tokyo JST

Monday, October 19, 2026

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

Castro Valley to Tokyo conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

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

  • Oct 19, 2026 – Nov 1, 2026: +16h
  • Nov 1, 2026 – Mar 14, 2027: +17h
  • Mar 14, 2027 – Oct 19, 2027: +16h

Distance

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

More conversions

Tokyo 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 TokyoLondon to TokyoLos Angeles to TokyoChicago to TokyoToronto to TokyoSão Paulo to TokyoParis to TokyoBerlin to TokyoMoscow to TokyoDubai to TokyoNew Delhi to TokyoBangkok to Tokyo

Questions and answers

What is the time difference between Castro Valley and Tokyo?

Tokyo is 16 hours ahead of Castro Valley.

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

When it is 9:00 AM in Castro Valley, it is 1:00 AM (Tue, Oct 20) in Tokyo.

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

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

Does the time difference between Castro Valley and Tokyo change?

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