Time Difference Between Great Falls and Tokyo
Tokyo is 15 hours ahead Great Falls.
United States
Great Falls
America/Denver · UTC-6
Japan
Tokyo
Asia/Tokyo · UTC+9
Best Times to Meet
Hours where standard working time (9 AM – 6 PM) overlaps in both Great Falls and Tokyo.
Standard working hours don't overlap between Great Falls and Tokyo. Consider early-morning calls in Great Falls or late-evening calls in Tokyo.
Great Falls to Tokyo — 24-Hour Conversion
Each row shows the equivalent local time in Tokyo for an hour in Great Falls. Working-hours rows (9–18) are highlighted.
| Great Falls | Tokyo | Match |
|---|---|---|
| Workday in Tokyo | ||
| Workday in Tokyo | ||
| Workday in Tokyo | ||
| Off hours | ||
| Off hours | ||
| Off hours | ||
| Off hours | ||
| Off hours | ||
| Off hours | ||
| +1 day | Workday in Great Falls | |
| +1 day | Workday in Great Falls | |
| +1 day | Workday in Great Falls | |
| +1 day | Workday in Great Falls | |
| +1 day | Workday in Great Falls | |
| +1 day | Workday in Great Falls | |
| +1 day | Workday in Great Falls | |
| +1 day | Workday in Great Falls | |
| +1 day | Workday in Great Falls | |
| +1 day | Workday in Tokyo | |
| +1 day | Workday in Tokyo | |
| +1 day | Workday in Tokyo | |
| +1 day | Workday in Tokyo | |
| +1 day | Workday in Tokyo | |
| +1 day | Workday in Tokyo |
Frequently Asked Questions
What is the time difference between Great Falls and Tokyo?
Tokyo, Japan (UTC+9) is 15 hours ahead Great Falls, United States (UTC-6).
What is the best time to schedule a meeting between Great Falls and Tokyo?
The best meeting times overlap when both cities are within standard working hours (9 AM – 6 PM). The full hour-by-hour table on this page lists every overlap window.
Does daylight saving time change the difference between Great Falls and Tokyo?
Yes — when one city observes daylight saving time and the other does not, the gap shifts by an hour. The conversion table on this page reflects the current offset, including any active DST.
When it is 9 AM in Great Falls, what time is it in Tokyo?
Use the conversion table on this page — every hour in Great Falls is mapped to its equivalent local time in Tokyo, including day shift markers when the date differs.