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

Other days

lisp

Lisp Day
hiv awareness

Hiv Awareness Day
hoodie

Hoodie Day
blanket fort

Blanket Fort Day
kiss a brunette

Kiss A Brunette Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
youth

Youth Day
carpenters

Carpenters Day
cuddle up

Cuddle Up Day
lash

Lash Day