Quick answer: Japan has 245 business days in 2027 for a default Monday-Friday week, for the period Jan 1, 2027 through Dec 31, 2027.
Month-by-month business days (2027)
Weekdays counted: Monday-Friday.
| Month | Business days | Public holiday days in month |
|---|---|---|
| January | 19 | 2 |
| February | 18 | 2 |
| March | 22 | 2 |
| April | 21 | 1 |
| May | 18 | 3 |
| June | 22 | 0 |
| July | 21 | 1 |
| August | 21 | 1 |
| September | 20 | 2 |
| October | 20 | 1 |
| November | 20 | 2 |
| December | 23 | 0 |
Public holidays in 2027 (Japan)
National public holidays that overlap the same date range as the business day calculation.
| Date | Name |
|---|---|
| Jan 1, 2027 | New Year's Day |
| Jan 11, 2027 | Coming of Age Day |
| Feb 11, 2027 | National Foundation Day |
| Feb 23, 2027 | Emperor's Birthday |
| Mar 21, 2027 | Spring Equinox |
| Mar 22, 2027 | Spring Equinox |
| Apr 29, 2027 | Shōwa Day |
| May 3, 2027 | Constitution Memorial Day |
| May 4, 2027 | Greenery Day |
| May 5, 2027 | Children's Day |
| Jul 19, 2027 | Sea Day |
| Aug 11, 2027 | Mountain Day |
| Sep 20, 2027 | Respect for the Aged Day |
| Sep 23, 2027 | Autumn Equinox |
| Oct 11, 2027 | Sports Day |
| Nov 3, 2027 | Culture Day |
| Nov 23, 2027 | Labor Thanksgiving Day |
Key insights
Total working days
Default Monday-Friday workweek in 2027.
Highest month
23 working days.
Lowest month
18 working days.
Holidays included
National public holidays excluded from the total.
Related guides & tools
Frequently asked questions
How many working days are there in Japan in 2027?
Japan has 245 working days in 2027 using a default Monday-Friday workweek and excluding national public holidays.
Are public holidays included in the calculation?
Yes. National public holidays in 2027 are excluded from the working-day total (about 17 calendar days in this dataset).
Which month has the fewest working days?
February and May has the fewest working days, with 18.
Can I customize the working week or include a region?
Yes. Use the business days calculator to change weekdays, add a region filter (when available), or calculate a custom range.
All countries: working days guides
Working days in Japan - quick context
Japan’s national holidays are fixed by law, with occasional calendar adjustments. Golden Week and year-end/New Year clusters have a big impact on monthly working-day distribution. Figures on this page follow HolidayDB’s JP calendar for the year shown.