Coordination class
async-first pair
United States and Japan do not share standard 9-to-6 business hours today. Treat this as an async-first corridor and reserve synchronous calls for edge-hour handoffs.
Pair comparison
United States vs Japan
United States is 14.0 hours behind Japan. They have no overlap in standard 9-to-6 business hours — you'll need edge-hour meetings.
Country comparisons use one representative IANA zone per country, current public-holiday rows, and a same-day business-hour model. Multi-zone countries still need city-level checks before travel or payroll decisions.
Live values rendered at Nov 5, 4:42 PM UTC.
United States
Reference city: New York
11:42EST
Thu · Nov 5 · UTC-05:00
- DST shifts / 12mo
- 1
- Public holidays 2026
- 16
Japan
Reference city: Tokyo
01:42GMT+9
Fri · Nov 6 · UTC+09:00
- DST shifts / 12mo
- 0
- Public holidays 2026
- 17
Operational read on this pair
DST drift risk
1 sampled shifts / 12mo
United States shifts clocks while Japan is stable in the sampled reference zone, so recurring meetings can move by one hour for part of the year.
Holiday availability
16 vs 17 listed holidays
United States and Japan share 2 listed holiday dates in the selected year, so shared shutdown risk is visible before campaign or sprint planning.
Pair workflow examples
What fixed local work times become across the pair
The current offset is enough for today, but the examples below make the page useful for real recurring work: standups, reviews, and end-of-day handoffs anchored to either country. Recheck these around DST transition weeks when either sampled zone shifts.
Anchored in United States
- morning standup: 9:00 AM in United States is 11:00 PM in Japan (same day).
- midday review: 1:00 PM in United States is 3:00 AM in Japan (next day).
- end-of-day handoff: 5:00 PM in United States is 7:00 AM in Japan (next day).
Anchored in Japan
- morning standup: 9:00 AM in Japan is 7:00 PM in United States (previous day).
- midday review: 1:00 PM in Japan is 11:00 PM in United States (previous day).
- end-of-day handoff: 5:00 PM in Japan is 3:00 AM in United States (same day).
Best live-use strategy
No shared 9-to-6 window appears today, so United States and Japan should use async-first workflows, rotating live calls, and written decision logs.
United States next holiday checks
Veterans Day (2026-11-11); Thanksgiving Day (2026-11-26); Christmas Day (2026-12-25)
Japan next holiday checks
Labour Thanksgiving Day (2026-11-23)
Business-hour overlap
No overlap in standard 9–18 local working hours. You'll typically schedule synchronous meetings in the early morning for one side and late evening for the other.
24-hour overlap heatmap (UTC across the bottom)
United States
19
20
21
22
23
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
Japan
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
00
01
02
03
04
05
06
07
08
000102030405060708091011121314151617181920212223
- Working hours (09–18 local)
- Edge hours (07–09, 18–22)
- Sleep hours (22–07)
Overlapping public holidays in 2026 (2)
- 2026-01-01United States: New Year's Day · Japan: New Year's Day
- 2026-10-12United States: Columbus Day · Japan: Sports Day
Both teams may be off on the dates above — useful for sprint planning and launch calendars.