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

Other days

tulip

Tulip Day
lumpy rug

Lumpy Rug Day
cuddle up

Cuddle Up Day
martini

Martini Day
boy friend

Boy Friend Day
gum

Gum Day
ponytail

Ponytail Day
first love

First Love Day
promposal

Promposal Day
carpenters

Carpenters Day