Coordination class
moderate handoff pair
India and Japan have a usable but finite overlap window. Cluster live decisions inside that window and push reviews, approvals, and status updates async.
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Pair comparison
India is 3.5 hours behind Japan. Their business-hour overlap is 5.5 hours per day.
Last updated recently. 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 Jun 7, 10:05 PM UTC.
India
Reference city: Mumbai
Mon · Jun 8 · UTC+05:30
Japan
Reference city: Tokyo
Mon · Jun 8 · UTC+09:00
Coordination class
moderate handoff pair
India and Japan have a usable but finite overlap window. Cluster live decisions inside that window and push reviews, approvals, and status updates async.
DST drift risk
0 sampled shifts / 12mo
Neither sampled reference zone has a DST transition in the next 12 months, so the offset gap is unusually stable for recurring calls.
Holiday availability
16 vs 17 listed holidays
India and Japan have different public-holiday calendars, but neither side dominates the year by count in this dataset. Check local observances before firm launch dates.
Pair workflow examples
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.
Best live-use strategy
5.5 shared business hours is enough for normal recurring meetings, reviews, and same-day escalation, assuming neither side is on holiday.
India next holiday checks
Muharram (2026-06-26); Independence Day (2026-08-15); Mawlid (Eid e-Milad) (2026-08-25); Janmashtami (2026-09-04)
Japan next holiday checks
Marine Day (2026-07-20); Mountain Day (2026-08-11); Respect for the Aged Day (2026-09-21); Autumnal Equinox Day (2026-09-23)
Overlap window: 3.5:00 → 09:00 UTC · 5.5h per day.
24-hour overlap heatmap (UTC across the bottom)
Reference fields include representative IANA zones, offsets, reference cities, ISO country codes, current abbreviations, DST transition counts, business-overlap window, holiday counts, overlapping holiday rows, and upcoming retained holidays.