Question 1

How many days does May 1991 have?

Accepted Answer

May 1991 has 31 days. It starts on Wednesday and ends on Friday.

Question 2

What ISO week does May 1991 start in?

Accepted Answer

1 May 1991 falls in ISO week 18. Weeks run Monday–Sunday per ISO 8601.

Question 3

Where can I see the public holidays of South Korea in May 1991?

Accepted Answer

The calendar on this page marks every national public holiday of South Korea in May 1991 in red, with joint/regional days in amber.

5월 1991