Business days calculator: Japan
Add working days to a date or count working days between dates in Japan, using the real public-holiday calendar (18 holidays in 2026) and the correct weekend (Saturday and Sunday).
A few dozen free calculations a day. Need this in code? The API answers the same questions in one GET request, and the playground covers the fancier ones: due dates, paydays, bridge days.
Upcoming public holidays in Japan
| Date | Holiday |
|---|---|
| 2026-09-21 | Respect for the Aged Day |
| 2026-09-22 | National Holiday |
| 2026-09-23 | Autumnal Equinox Day |
| 2026-10-12 | Sports Day |
| 2026-11-03 | Culture Day |
| 2026-11-23 | Labor Thanksgiving Day |
More calculators
Invoice due datesPayroll datesHoliday calendarsCommon working daysSettlement dates (T+1/T+2)SLA deadlines
Country calculators
Each page carries that country's upcoming holidays and weekend rule.
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