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

Other days

camera

Camera Day
offer

Offer Day
boy friend

Boy Friend Day
eat what you want

Eat What You Want Day
slime

Slime Day
nae nae

Nae Nae Day
stress awareness

Stress Awareness Day
mean girls

Mean Girls Day
self care

Self Care Day
martini

Martini Day