Oops, it doesn't look like 'would a have a field day' is a national day..

Other days

singles

Singles Day
self appreciation

Self Appreciation Day
bounce

Bounce Day
tulip

Tulip Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
stress awareness

Stress Awareness Day
tell ur crush you like them

Tell Ur Crush You Like Them Day
embarrass your best friend

Embarrass Your Best Friend Day
martini

Martini Day
cursing

Cursing Day