Coordination class
narrow overlap pair
France and Japan have a very narrow overlap window. Use a rotating meeting burden if the relationship is ongoing, especially when 2 annual DST shifts are in play.
Pair comparison
France vs Japan
France is 8.0 hours behind Japan. Their business-hour overlap is 1 hours per day.
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.
France
Reference city: Paris
17:42GMT+1
Thu · Nov 5 · UTC+01:00
- DST shifts / 12mo
- 2
- Public holidays 2026
- 11
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
2 sampled shifts / 12mo
France 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
11 vs 17 listed holidays
France and Japan share 1 listed holiday date 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 France
- morning standup: 9:00 AM in France is 5:00 PM in Japan (same day).
- midday review: 1:00 PM in France is 9:00 PM in Japan (same day).
- end-of-day handoff: 5:00 PM in France is 1:00 AM in Japan (next day).
Anchored in Japan
- morning standup: 9:00 AM in Japan is 1:00 AM in France (same day).
- midday review: 1:00 PM in Japan is 5:00 AM in France (same day).
- end-of-day handoff: 5:00 PM in Japan is 9:00 AM in France (same day).
Best live-use strategy
1 shared business hour is a thin handoff window. Treat it as escalation time, not a full collaboration block.
France next holiday checks
Armistice Day (2026-11-11); Christmas Day (2026-12-25)
Japan next holiday checks
Labour Thanksgiving Day (2026-11-23)
Business-hour overlap
Overlap window: 08:00 → 09:00 UTC · 1h per day.
24-hour overlap heatmap (UTC across the bottom)
France
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05
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00
Japan
09
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11
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15
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23
00
01
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08
000102030405060708091011121314151617181920212223
- Working hours (09–18 local)
- Edge hours (07–09, 18–22)
- Sleep hours (22–07)
Overlapping public holidays in 2026 (1)
- 2026-01-01France: New Year's Day · Japan: New Year's Day
Both teams may be off on the dates above — useful for sprint planning and launch calendars.