Question 1

How many days does April 2011 have?

Accepted Answer

April 2011 has 30 days. It starts on Friday and ends on Saturday.

Question 2

What ISO week does April 2011 start in?

Accepted Answer

1 April 2011 falls in ISO week 13. Weeks run Monday–Sunday per ISO 8601.

Question 3

Where can I see the public holidays of United States in April 2011?

Accepted Answer

The calendar on this page marks every national public holiday of United States in April 2011 in red, with joint/regional days in amber.