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

Other days

martini

Martini Day
donate your hair

Donate Your Hair Day
gum

Gum Day
nail polish

Nail Polish Day
bow tie

Bow Tie Day
lisp

Lisp Day
fiancee

Fiancee Day
tulip

Tulip Day
youth

Youth Day
kiss a brunette

Kiss A Brunette Day