Oops, it doesn't look like 'i miss mere day' is a national day..

Other days

slime

Slime Day
self appreciation

Self Appreciation Day
nae nae

Nae Nae Day
unicorn

Unicorn Day
tell ur crush you like them

Tell Ur Crush You Like Them Day
get funky

Get Funky Day
stress awareness

Stress Awareness Day
self care

Self Care Day
ride the wind

Ride The Wind Day
boy friend

Boy Friend Day