Charlestown to Tokyo time converter

Tokyo is 13 hours ahead of Charlestown. When it is 9:00 AM in Charlestown, it is 10:00 PM in Tokyo.

Charlestown EDT

Tuesday, October 20, 2026

Tokyo JST

Tuesday, October 20, 2026

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

Charlestown to Tokyo conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

The difference changes during the year because Charlestown and Tokyo 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

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

More conversions

Tokyo to CharlestownCharlestown to New YorkCharlestown to LondonCharlestown to Los AngelesCharlestown to ChicagoCharlestown to TorontoCharlestown to São PauloCharlestown to ParisCharlestown to BerlinCharlestown to MoscowCharlestown to DubaiCharlestown to New DelhiCharlestown 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 Charlestown and Tokyo?

Tokyo is 13 hours ahead of Charlestown.

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

When it is 9:00 AM in Charlestown, it is 10:00 PM in Tokyo.

When is the best time to call Tokyo from Charlestown?

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

Does the time difference between Charlestown 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.