Oops, it doesn't look like 'i scream day' is a national day..

Other days

ask out your crush

Ask Out Your Crush Day
bow tie

Bow Tie Day
hiv awareness

Hiv Awareness Day
cursing

Cursing Day
youth

Youth Day
first love

First Love Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
lisp

Lisp Day
lost sock memorial

Lost Sock Memorial Day
fiancee

Fiancee Day