Oops, it doesn't look like 'diddle your bits day' is a national day..

Other days

tulip

Tulip Day
pick me

Pick Me Day
tell ur crush you like them

Tell Ur Crush You Like Them Day
ride the wind

Ride The Wind Day
stress awareness

Stress Awareness Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
self appreciation

Self Appreciation Day
embarrass your best friend

Embarrass Your Best Friend Day
mean girls

Mean Girls Day
coffee

Coffee Day