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.
Pair comparison
Singapore vs Japan
Singapore is 1.0 hours behind Japan. Their business-hour overlap is 8 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.
Singapore
Reference city: Singapore
00:42GMT+8
Fri · Nov 6 · UTC+08:00
- DST shifts / 12mo
- 0
- Public holidays 2026
- 10
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
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
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 Singapore
- morning standup: 9:00 AM in Singapore is 10:00 AM in Japan (same day).
- midday review: 1:00 PM in Singapore is 2:00 PM in Japan (same day).
- end-of-day handoff: 5:00 PM in Singapore is 6:00 PM in Japan (same day).
Anchored in Japan
- morning standup: 9:00 AM in Japan is 8:00 AM in Singapore (same day).
- midday review: 1:00 PM in Japan is 12:00 PM in Singapore (same day).
- end-of-day handoff: 5:00 PM in Japan is 4:00 PM in Singapore (same day).
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
Deepavali (2026-11-09); Christmas Day (2026-12-25)
Japan next holiday checks
Labour Thanksgiving Day (2026-11-23)
Business-hour overlap
Overlap window: 01:00 → 09:00 UTC · 8h per day.
24-hour overlap heatmap (UTC across the bottom)
Singapore
08
09
10
11
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14
15
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17
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23
00
01
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Japan
09
10
11
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21
22
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 (2)
- 2026-01-01Singapore: New Year's Day · Japan: New Year's Day
- 2026-03-20Singapore: Hari Raya Puasa · Japan: Vernal Equinox Day
Both teams may be off on the dates above — useful for sprint planning and launch calendars.