Oops, it doesn't look like 'Best Friend Couples day' is a national day..

Other days

boba

Boba Day
gallery

Gallery Day
get funky

Get Funky Day
reading

Reading Day
lumpy rug

Lumpy Rug Day
one

One Day
nail polish

Nail Polish Day
hannah

Hannah Day
my little pony

My Little Pony Day
stud

Stud Day