Oops, it doesn't look like 'mack on a guy day' is a national day..

Other days

slime

Slime Day
ruby

Ruby Day
bow tie

Bow Tie Day
bonang

Bonang Day
law

Law Day
ride the wind

Ride The Wind Day
girl friend

Girl Friend Day
artists

Artists Day
eat what you want

Eat What You Want Day
get funky

Get Funky Day