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

Other days

boyfriend

Boyfriend Day
get funky

Get Funky Day
nae nae

Nae Nae Day
blanket fort

Blanket Fort Day
artists

Artists Day
ruby

Ruby Day
self care

Self Care Day
offer

Offer Day
buddy

Buddy Day
ride the wind

Ride The Wind Day