Coordination class
easy business overlap
Singapore and Japan have a broad overlap window today, so normal recurring meetings are low-friction. Still recheck invites around DST transition weeks.
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Pair comparison
Singapore is 1.0 hours behind Japan. Their business-hour overlap is 8 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, 11:18 PM UTC.
Singapore
Reference city: Singapore
Mon · Jun 8 · UTC+08:00
Japan
Reference city: Tokyo
Mon · Jun 8 · UTC+09:00
Coordination class
easy business overlap
Singapore and Japan have a broad overlap window today, so normal recurring meetings are low-friction. Still recheck invites around DST transition weeks.
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
10 vs 17 listed holidays
Singapore 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
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
8 shared business hours is enough for normal recurring meetings, reviews, and same-day escalation, assuming neither side is on holiday.
Singapore next holiday checks
National Day (2026-08-10); Deepavali (2026-11-09); Christmas Day (2026-12-25)
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: 01:00 → 09:00 UTC · 8h per day.
24-hour overlap heatmap (UTC across the bottom)
Both teams may be off on the dates above — useful for sprint planning and launch calendars.
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.