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

Other days

frozen yogurt

Frozen Yogurt Day
boy friend

Boy Friend Day
stud

Stud Day
comfy

Comfy Day
artists

Artists Day
ask out your crush

Ask Out Your Crush Day
nail polish

Nail Polish Day
tulip

Tulip Day
bonang

Bonang Day
nae nae

Nae Nae Day