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

Other days

pampering

Pampering Day
self care

Self Care Day
bounce

Bounce Day
coffee

Coffee Day
frozen yogurt

Frozen Yogurt Day
lumpy rug

Lumpy Rug Day
slime

Slime Day
ride the wind

Ride The Wind Day
nae nae

Nae Nae Day
artists

Artists Day