Question 1

How many days does January 1989 have?

Accepted Answer

January 1989 has 31 days. It starts on Sunday and ends on Tuesday.

Question 2

What ISO week does January 1989 start in?

Accepted Answer

1 January 1989 falls in ISO week 52. Weeks run Monday–Sunday per ISO 8601.

Question 3

Where can I see the public holidays of Sri Lanka in January 1989?

Accepted Answer

The calendar on this page marks every national public holiday of Sri Lanka in January 1989 in red, with joint/regional days in amber.