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

Other days

youth

Youth Day
get funky

Get Funky Day
slime

Slime Day
stud

Stud Day
ride the wind

Ride The Wind Day
appreciate yaself a lil extra

Appreciate Yaself A Lil Extra Day
lash

Lash Day
self care

Self Care Day
brow

Brow Day
china

China Day