Question 1

How many days does January 2010 have?

Accepted Answer

January 2010 has 31 days. It starts on Friday and ends on Sunday.

Question 2

What ISO week does January 2010 start in?

Accepted Answer

1 January 2010 falls in ISO week 52. Weeks run Monday–Sunday per ISO 8601.

Question 3

Where can I see the public holidays of South Korea in January 2010?

Accepted Answer

The calendar on this page marks every national public holiday of South Korea in January 2010 in red, with joint/regional days in amber.

1월 2010