How many days does May 1931 have?

May 1931 has 31 days. It starts on Friday and ends on Sunday.

What ISO week does May 1931 start in?

1 May 1931 falls in ISO week 18. Weeks run Monday–Sunday per ISO 8601.

The calendar on this page marks every national public holiday of Japan in May 1931 in red, with joint/regional days in amber.

日本 has 16 official public holidays in 2026, listed above with their exact dates.

The first 2026 public holiday in 日本 is 元日 New Year, on 1月1日.

Use the caldays long-weekend planner for 日本 to find every bridge day and turn a few days of leave into a longer break.

Kalender bulan

3 祝日

月

火

水

木

金

土

日

Japan · 1931

年間カレンダー