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

Other days

promposal

Promposal Day
hoodie

Hoodie Day
hiv awareness

Hiv Awareness Day
azonto is acceptable

Azonto Is Acceptable Day
lisp

Lisp Day
fiancee

Fiancee Day
unicorn

Unicorn Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
latina equal pay

Latina Equal Pay Day
bow tie

Bow Tie Day