Oops, it doesn't look like 'Science FoundationIn Honor Of Tax day' is a national day..

Other days

ponytail

Ponytail Day
artists

Artists Day
appreciate yaself a lil extra

Appreciate Yaself A Lil Extra Day
comfy

Comfy Day
lash

Lash Day
self appreciation

Self Appreciation Day
martini

Martini Day
self care

Self Care Day
me

Me Day
fiancee

Fiancee Day