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

Other days

azonto is acceptable

Azonto Is Acceptable Day
law

Law Day
self care

Self Care Day
lisp

Lisp Day
fiancee

Fiancee Day
bubble bath

Bubble Bath Day
slime

Slime Day
polyamory

Polyamory Day
first love

First Love Day
bow tie

Bow Tie Day