Oops, it doesn't look like 'boycott of the nfl on veterans day' is a national day..

Other days

gum

Gum Day
blanket fort

Blanket Fort Day
boy friend

Boy Friend Day
self care

Self Care Day
boba

Boba Day
carpenters

Carpenters Day
kale

Kale Day
bow tie

Bow Tie Day
self appreciation

Self Appreciation Day
nail polish

Nail Polish Day