In May 2026, Japan has 18 business days once weekends and 4 public holidays are excluded. Counting only weekends (ignoring public holidays) instead gives 21 weekdays.
Key facts
Business days (weekends + holidays excluded)
18
Weekdays only (weekends excluded, holidays counted as working days)
21
Public holidays this month
4
Public holidays this month
Date
Holiday
2026-05-03
Constitution Memorial Day
2026-05-04
Greenery Day
2026-05-05
Children's Day
2026-05-06
Substitute Holiday
Calendar
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
2
3Constitution Memorial Day
4Greenery Day
5Children's Day
6Substitute Holiday
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Frequently asked questions
How many business days are in May 2026?
May 2026 has 18 business days in Japan, once weekends and public holidays are excluded.