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

Other days

martini

Martini Day
boy friend

Boy Friend Day
nae nae

Nae Nae Day
lumpy rug

Lumpy Rug Day
china

China Day
reading

Reading Day
pumpkin

Pumpkin Day
law

Law Day
kale

Kale Day
eat what you want

Eat What You Want Day