There are 245 working days in Japan in 2026, counting Monday to Friday and excluding 16 public holidays that fall on a weekday. That is from 365 calendar days, with 104 weekend days removed.
Working days
245
Mon–Fri, holidays removed
Weekend days
104
Saturdays + Sundays
Weekday holidays
16
1 more fall on weekends
Avg / month
20.4
working days per month
| Month | Days | Weekends | Holidays | Working days |
|---|---|---|---|---|
| January | 31 | 9 | 2 | 20 |
| February | 28 | 8 | 2 | 18 |
| March | 31 | 9 | 1 | 21 |
| April | 30 | 8 | 1 | 21 |
| May | 31 | 10 | 3 | 18 |
| June | 30 | 8 | 0 | 22 |
| July | 31 | 8 | 1 | 22 |
| August | 31 | 10 | 1 | 20 |
| September | 30 | 8 | 2 | 20 |
| October | 31 | 9 | 1 | 21 |
| November | 30 | 9 | 2 | 19 |
| December | 31 | 8 | 0 | 23 |
| Total | 365 | 104 | 16 | 245 |
These are the 16 public holidays in Japan that land on a weekday in 2026 and therefore remove a working day. Holidays that fall on a weekend are not listed here because they do not change the working-day total.
The 245 working days shown above are the 365 calendar days of 2026, minus the 104 Saturdays and Sundays, minus the 16 public holidays that land on a weekday. Holidays that fall on a Saturday or Sunday are not subtracted, because they do not remove a day anyone would have worked; in 2026 that applies to 1 of Japan's public holidays. At a standard eight-hour day, 245 working days works out to roughly 1,960 working hours across the year, before any annual leave is taken.
Japanese law in article 35 of the Labour Standards Act requires at least one rest day per week or four per four-week period, with no statutory requirement that the rest day be a Sunday. Most office and government work runs Monday to Friday, but retail, manufacturing and small business commonly operate six-day weeks. The civil procedure code article 95 rolls deadlines falling on a Sunday or a kokumin no shukujitsu to the next working day; Saturdays are also excluded by judicial practice though not by statute. Bank settlement follows the Bank of Japan's Zengin system, which observes the full national list of sixteen.
Japan recognises sixteen kokumin no shukujitsu under the National Holidays Act of 1948, the highest count of any major economy. Several modern holidays were introduced under the Happy Monday system enacted in 1998 and extended in 2003, which moved Coming of Age Day, Marine Day, Respect for the Aged Day and Sports Day to a Monday to create three-day weekends. Golden Week clusters four holidays between 29 April and 5 May; Silver Week occasionally creates a similar cluster in September when the autumn equinox falls on a Wednesday. The Emperor's Birthday floats with the reigning emperor: it moved from 23 December to 23 February when Akihito abdicated in 2019.
This matters because the working-day total is not spread evenly. Some months in Japan carry several public holidays while others have none, so the month-by-month table above is the figure to use for payroll runs, billing cycles, SLA windows, and project plans rather than a flat assumption of about 20.4 working days per month. A month with two weekday holidays can have several fewer working days than a clear one, which changes capacity planning and the realistic delivery date for anything scheduled in business days.
To see the individual dates, the day of the week each holiday lands on, and the full official list, open the Japan holiday calendar for 2026. You can subscribe to those dates as an .ics feed so they appear in your own calendar, or use the working-days-between-two-dates calculator to count business days for a specific date range rather than the whole year.
Working-day figures are computed from the public holiday list for Japan (source: Nager.Date and the national references above) combined with a Monday-to-Friday business week. Regional holidays and substitute-day rules vary; confirm against the official calendar for legal or payroll use.