Oops, it doesn't look like 'treasure myself one day' is a national day..

Other days

reading

Reading Day
lisp

Lisp Day
one

One Day
stud

Stud Day
ormille

Ormille Day
lumpy rug

Lumpy Rug Day
latina equal pay

Latina Equal Pay Day
aloxolt

Aloxolt Day
healing

Healing Day
unicorn

Unicorn Day