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

Other days

tulip

Tulip Day
lisp

Lisp Day
latina equal pay

Latina Equal Pay Day
pick me

Pick Me Day
me

Me Day
stud

Stud Day
kiss a ginger

Kiss A Ginger Day
cuddle up

Cuddle Up Day
youth

Youth Day
boy friend

Boy Friend Day