Oops, it doesn't look like 'with iron fist since the day' is a national day..

Other days

tulip

Tulip Day
kiss a ginger

Kiss A Ginger Day
carpenters

Carpenters Day
brow

Brow Day
slime

Slime Day
bow tie

Bow Tie Day
blanket fort

Blanket Fort Day
healing

Healing Day
me

Me Day
ask out your crush

Ask Out Your Crush Day