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

Other days

comfy

Comfy Day
self care

Self Care Day
believe

Believe Day
special education

Special Education Day
bow tie

Bow Tie Day
artists

Artists Day
carpenters

Carpenters Day
lash

Lash Day
bounce

Bounce Day
self appreciation

Self Appreciation Day