Oops, it doesn't look like 'give kalman hell day' is a national day..

Other days

lumpy rug

Lumpy Rug Day
cat girl

Cat Girl Day
kiss a ginger

Kiss A Ginger Day
aloxolt

Aloxolt Day
ormille

Ormille Day
offer

Offer Day
first love

First Love Day
mean girls

Mean Girls Day
book

Book Day
lash

Lash Day