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

Other days

believe

Believe Day
buddy

Buddy Day
singles

Singles Day
gum

Gum Day
raise awerness of zeus

Raise Awerness Of Zeus Day
get funky

Get Funky Day
kiss a brunette

Kiss A Brunette Day
brow

Brow Day
tulip

Tulip Day
artists

Artists Day