Tokyo to Charlestown time converter

Charlestown is 13 hours behind Tokyo. When it is 9:00 AM in Tokyo, it is 8:00 PM (Mon, Oct 19) in Charlestown.

Tokyo JST

Tuesday, October 20, 2026

Charlestown EDT

Tuesday, October 20, 2026

Tokyo
Japan
Tue, Oct 20
JSTUTC+9
Charlestown
Massachusetts, United States
Tue, Oct 20
EDTUTC-4-13h
Finding your time zone…
Shared working hours (9:00–18:00)

Tokyo to Charlestown conversion table

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

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

Best time to call or meet

Working hours don't overlap fully. The closest fit is 9:00 AM – 11:00 AM in Tokyo (8:00 PM – 10:00 PM in Charlestown): working hours on one side, early or late on the other.

Daylight saving time and the difference

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

  • Oct 20, 2026 – Nov 1, 2026: -13h
  • Nov 1, 2026 – Mar 14, 2027: -14h
  • Mar 14, 2027 – Oct 20, 2027: -13h

Distance

Tokyo and Charlestown are 10,789 km (6,704 miles) apart in a straight line.

More conversions

Charlestown 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 CharlestownLondon to CharlestownLos Angeles to CharlestownChicago to CharlestownToronto to CharlestownSão Paulo to CharlestownParis to CharlestownBerlin to CharlestownMoscow to CharlestownDubai to CharlestownNew Delhi to CharlestownBangkok to Charlestown

Questions and answers

What is the time difference between Tokyo and Charlestown?

Charlestown is 13 hours behind Tokyo.

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

When it is 9:00 AM in Tokyo, it is 8:00 PM (Mon, Oct 19) in Charlestown.

When is the best time to call Charlestown from Tokyo?

Working hours don't overlap fully. The closest fit is 9:00 AM – 11:00 AM in Tokyo (8:00 PM – 10:00 PM in Charlestown): working hours on one side, early or late on the other.

Does the time difference between Tokyo and Charlestown change?

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