Business Days in September 2025 for Japan
September 2025 has 20 eigyo-bi under the Japanese statutory holiday calendar. September 2025 contains 2 Japanese statutory holidays on weekdays. The month covers 30 calendar days, of which 8 are Saturday and Sunday. That count drives invoice cycles, payroll runs, and any contract that defines deadlines as a number of eigyo-bi in Japan.
eigyo-bi
20
Calendar Days
30
Weekend Days
8
shukujitsu
2
Work Weeks
4.0
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 wknd | 7 wknd |
8 | 9 | 10 | 11 | 12 | 13 wknd | 14 wknd |
15 Respect for the Aged Day | 16 | 17 | 18 | 19 | 20 wknd | 21 wknd |
22 | 23 Autumnal Equinox Day | 24 | 25 | 26 | 27 wknd | 28 wknd |
29 | 30 |
shukujitsu in September 2025
Japan September deadlines
Respect for the Aged Day on the third Monday of September and Autumnal Equinox Day in late September often produce a Citizens' Holiday in between. Withholding tax for August is due September 10. The Bank of Japan holds a Monetary Policy Meeting in mid-September. Quarterly reports for fiscal-year companies with June 30 year-ends are due.
Day-of-week distribution
The count of each weekday in September 2025. Useful for shift scheduling, weekly recurring billing, and any rota that depends on a specific weekday landing in-month.
| Day | Count |
|---|---|
| Monday | 5 |
| Tuesday | 5 |
| Wednesday | 4 |
| Thursday | 4 |
| Friday | 4 |
| Saturday | 4 |
| Sunday | 4 |
Japan reporting cycles and business-day rules
Japanese business-day cycles align with gensen choshu zei (withholding tax) on the 10th, shakai hoken hi (social insurance) by the end of the month, and quarterly hojin zei (corporate tax) instalments. The Zengin Data Telecommunication System clears domestic transfers same-day; the Bank of Japan operates BOJ-NET as the wholesale RTGS system. JFY (Japanese fiscal year) runs April to March for most listed companies and the government, so quarter-end cycles do not align with calendar quarters. Half-year shoyo (bonus) payments cluster mid-June and mid-December.
September 2025 eigyo-bi compared by country
Working-day counts vary across countries because each country observes its own public holidays. The table below puts Japan alongside the other ten supported holiday calendars for September 2025.
| Country | Business Days | Holidays this month |
|---|---|---|
| 🇺🇸United States | 21 | Labor Day |
| 🇬🇧United Kingdom | 22 | None |
| 🇨🇦Canada | 20 | Labour Day, National Day for Truth and Reconciliation |
| 🇦🇺Australia | 22 | None |
| 🇮🇳India | 22 | None |
| 🇵🇭Philippines | 22 | None |
| 🇫🇷France | 22 | None |
| 🇩🇪Germany | 22 | None |
| 🇯🇵Japan (this page) | 20 | Respect for the Aged Day, Autumnal Equinox Day |
| 🇲🇽Mexico | 21 | Día de la Independencia |
| 🇸🇬Singapore | 22 | None |
How September 2025 compares year over year
September 2024 had 19 eigyo-bi, so September 2025 has 1 more working day year over year. On the surrounding months, August 2025 has 20 eigyo-bi and October 2025 has 22. Looking forward, September 2026 has 19 eigyo-bi under the same Japanese statutory holiday calendar.
Using this calculator in Japan
A Tokyo-listed manufacturer's keiri-bu uses the 20-day September 2025 count to align gensen choshu zei (withholding tax) remittance on the 10th with Zengin-system clearing windows and Bank of Japan settlement. A Yokohama trading company uses the count to track JFY (April to March) quarter-end accrual cycles. An Osaka construction subcontractor uses eigyo-bi math to align shitauke-ho subcontractor payment timelines with Golden Week and Obon closures.
For informational purposes only
This calculator provides general estimates based on business day counting rules. It does not constitute legal advice. Deadlines in legal, regulatory, or contractual matters may be subject to jurisdiction-specific rules, court orders, or statutory exceptions. Always verify critical deadlines with a qualified professional.