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

Other days

artists

Artists Day
buddy

Buddy Day
blanket fort

Blanket Fort Day
pumpkin

Pumpkin Day
ruby

Ruby Day
singles

Singles Day
tulip

Tulip Day
azonto is acceptable

Azonto Is Acceptable Day
kiss a ginger

Kiss A Ginger Day
cuddle up

Cuddle Up Day