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

Other days

my little pony

My Little Pony Day
law

Law Day
boba

Boba Day
hoodie

Hoodie Day
self care

Self Care Day
brow

Brow Day
get funky

Get Funky Day
slime

Slime Day
bow tie

Bow Tie Day
nail polish

Nail Polish Day