Tokyo to Altadena time converter

Altadena is 16 hours behind Tokyo. When it is 9:00 AM in Tokyo, it is 5:00 PM (Sat, Oct 17) in Altadena.

Tokyo JST

Sunday, October 18, 2026

Altadena PDT

Saturday, October 17, 2026

Tokyo
Japan
Sun, Oct 18
JSTUTC+9
Altadena
California, United States
Sat, Oct 17
PDTUTC-7-16h
Finding your time zone…
Shared working hours (9:00–18:00)

Tokyo to Altadena conversion table

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

TokyoAltadena
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 Altadena).

Daylight saving time and the difference

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

  • Oct 18, 2026 – Nov 1, 2026: -16h
  • Nov 1, 2026 – Mar 14, 2027: -17h
  • Mar 14, 2027 – Oct 18, 2027: -16h

Distance

Tokyo and Altadena are 8,815 km (5,477 miles) apart in a straight line.

More conversions

Altadena 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 AltadenaLondon to AltadenaLos Angeles to AltadenaChicago to AltadenaToronto to AltadenaSão Paulo to AltadenaParis to AltadenaBerlin to AltadenaMoscow to AltadenaDubai to AltadenaNew Delhi to AltadenaBangkok to Altadena

Questions and answers

What is the time difference between Tokyo and Altadena?

Altadena is 16 hours behind Tokyo.

What time is it in Altadena when it is 9 AM in Tokyo?

When it is 9:00 AM in Tokyo, it is 5:00 PM (Sat, Oct 17) in Altadena.

When is the best time to call Altadena from Tokyo?

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

Does the time difference between Tokyo and Altadena change?

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