Question 1

How many days does January 1921 have?

Accepted Answer

January 1921 has 31 days. It starts on Saturday and ends on Monday.

Question 2

What ISO week does January 1921 start in?

Accepted Answer

1 January 1921 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 1921?

Accepted Answer

The calendar on this page marks every national public holiday of Sri Lanka in January 1921 in red, with joint/regional days in amber.