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

Other days

ponytail

Ponytail Day
emoji

Emoji Day
self appreciation

Self Appreciation Day
artists

Artists Day
boy friend

Boy Friend Day
self care

Self Care Day
one

One Day
hiv awareness

Hiv Awareness Day
lisp

Lisp Day
fiancee

Fiancee Day