Holidays for Tuesday, April 11th, 2017

April 11th, 2017 is National Library Workers Day

Observed Tuesday of the second full week of April

April 11th, 2017 is Submarine Day

Observed annually on March 17th and annually on April 11th

April 11th, 2017 is The start of Passover

Also known as Pesach

Observed the 15th of Nisan in the Hebrew calendar
Things that happened on this day in years past