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

Other days

bounce

Bounce Day
kale

Kale Day
tell a fairytale

Tell A Fairytale Day
azonto is acceptable

Azonto Is Acceptable Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
tulip

Tulip Day
martini

Martini Day
tell ur crush you like them

Tell Ur Crush You Like Them Day
donate your hair

Donate Your Hair Day
frozen yogurt

Frozen Yogurt Day