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Working day calculator

Japan — August 2027

August 2027 has 21 working days in Japan.

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Japan businesses have 21 working days in August 2027 — that's 31 calendar days minus 9 weekend days and 1 weekday public holiday (Mountain Day). Northern-hemisphere summer and Southern-hemisphere winter typically governs the work-rhythm in August; project deadlines and payroll cycles in Japan should account for the holiday days listed above. August is comparatively quiet in the Christian calendar but includes Assumption of Mary on the 15th in Catholic countries and several civic anniversaries across South America. For pay-period planning, August 2027 contains 4 full work-weeks plus 1 additional weekday, useful when scheduling milestones or quarterly reviews. The working-day count above counts substitute days as a single deduction — it does not double-count when a public holiday falling on a weekend is moved to a Monday or Friday. Use this figure as the authoritative baseline for Japan payroll-period calculations.

21

working days

9

weekend days

1

weekday public holiday

31

August

Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
2
3
4
5
6
7
8
9
10
11

Mountain Day

12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Working dayWeekendPublic holiday

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Public holidays falling on weekdays

  • Aug11

    Mountain Day

    Wednesday, August 11, 2027

    山の日

Official reference: Cabinet Office of Japan — National holidays · How we verify this data