Question 1

How many days does January 1931 have?

Accepted Answer

January 1931 has 31 days. It starts on Thursday and ends on Saturday.

Question 2

What ISO week does January 1931 start in?

Accepted Answer

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

Question 3

Where can I see the public holidays of South Korea in January 1931?

Accepted Answer

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

1월 1931