Question 1

How many days does October 1980 have?

Accepted Answer

October 1980 has 31 days. It starts on Wednesday and ends on Friday.

Question 2

What ISO week does October 1980 start in?

Accepted Answer

1 October 1980 falls in ISO week 40. Weeks run Monday–Sunday per ISO 8601.

Question 3

Where can I see the public holidays of South Korea in October 1980?

Accepted Answer

The calendar on this page marks every national public holiday of South Korea in October 1980 in red, with joint/regional days in amber.

10월 1980