Great Falls to Tokyo time converter

Tokyo is 15 hours ahead of Great Falls. When it is 9:00 AM in Great Falls, it is 12:00 AM (Mon, Oct 19) in Tokyo.

Great Falls MDT

Sunday, October 18, 2026

Tokyo JST

Monday, October 19, 2026

Great Falls
Montana, United States
Sun, Oct 18
MDTUTC-6
Tokyo
Japan
Mon, Oct 19
JSTUTC+9+15h
Finding your time zone…
Shared working hours (9:00–18:00)

Great Falls to Tokyo conversion table

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

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

Best time to call or meet

Working hours don't overlap fully. The closest fit is 4:00 PM – 6:00 PM in Great Falls (7:00 AM – 9:00 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 Great Falls and Tokyo switch clocks on different dates:

  • Oct 18, 2026 – Nov 1, 2026: +15h
  • Nov 1, 2026 – Mar 14, 2027: +16h
  • Mar 14, 2027 – Oct 18, 2027: +15h

Distance

Great Falls and Tokyo are 8,388 km (5,212 miles) apart in a straight line.

More conversions

Tokyo to Great FallsGreat Falls to New YorkGreat Falls to LondonGreat Falls to Los AngelesGreat Falls to ChicagoGreat Falls to TorontoGreat Falls to São PauloGreat Falls to ParisGreat Falls to BerlinGreat Falls to MoscowGreat Falls to DubaiGreat Falls to New DelhiGreat Falls 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 Great Falls and Tokyo?

Tokyo is 15 hours ahead of Great Falls.

What time is it in Tokyo when it is 9 AM in Great Falls?

When it is 9:00 AM in Great Falls, it is 12:00 AM (Mon, Oct 19) in Tokyo.

When is the best time to call Tokyo from Great Falls?

Working hours don't overlap fully. The closest fit is 4:00 PM – 6:00 PM in Great Falls (7:00 AM – 9:00 AM in Tokyo): working hours on one side, early or late on the other.

Does the time difference between Great Falls 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.