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

Other days

get funky

Get Funky Day
my little pony

My Little Pony Day
nail polish

Nail Polish Day
law

Law Day
boba

Boba Day
cat girl

Cat Girl Day
stud

Stud Day
lost sock memorial

Lost Sock Memorial Day
kiss a brunette

Kiss A Brunette Day
china

China Day