Oops, it doesn't look like 'do not cry day' is a national day..

Other days

slime

Slime Day
cursing

Cursing Day
get funky

Get Funky Day
self care

Self Care Day
azonto is acceptable

Azonto Is Acceptable Day
boba

Boba Day
coffee

Coffee Day
kale

Kale Day
frozen yogurt

Frozen Yogurt Day
lisp

Lisp Day