Oops, it doesn't look like 'make up your mind day' is a national day..

Other days

unicorn

Unicorn Day
pick me

Pick Me Day
self care

Self Care Day
ponytail

Ponytail Day
stud

Stud Day
ride the wind

Ride The Wind Day
carpenters

Carpenters Day
frozen yogurt

Frozen Yogurt Day
china

China Day
one

One Day