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

Other days

artists

Artists Day
kiss a ginger

Kiss A Ginger Day
fiancee

Fiancee Day
get funky

Get Funky Day
offer

Offer Day
self care

Self Care Day
boba

Boba Day
bounce

Bounce Day
azonto is acceptable

Azonto Is Acceptable Day
slime

Slime Day