Japanの公的祝日 10月 2026

10月 2026 in Japan runs 31 calendar days, Northern-hemisphere autumn and Southern-hemisphere spring. Japan observes one public holiday in 10月 2026: Sports Day. One of those — Sports Day — falls on a weekday and reduces the working-day count by one. That leaves 21 working days for Japan businesses, payroll cycles, and project schedules in 10月 2026. October hosts Indigenous Peoples' Day / Columbus Day in the Americas on the second Monday and Reformation Day in northern-European Protestant traditions on the 31st. For broader context, see the full 2026 calendar for Japan or the global view of holidays observed in 10月 2026 across all 190 countries we cover.