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

Other days

singles

Singles Day
blanket fort

Blanket Fort Day
hannah

Hannah Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
me

Me Day
chocolate milkshake

Chocolate Milkshake Day
lumpy rug

Lumpy Rug Day
hiv awareness

Hiv Awareness Day
prescription drug take back

Prescription Drug Take Back Day
tulip

Tulip Day