Question 1

How many days does April 1900 have?

Accepted Answer

April 1900 has 30 days. It starts on Sunday and ends on Monday.

Question 2

What ISO week does April 1900 start in?

Accepted Answer

1 April 1900 falls in ISO week 13. Weeks run Monday–Sunday per ISO 8601.

Question 3

Where can I see the public holidays of Russia in April 1900?

Accepted Answer

The calendar on this page marks every national public holiday of Russia in April 1900 in red, with joint/regional days in amber.

апрель 1900