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

Other days

buddy

Buddy Day
boba

Boba Day
blanket fort

Blanket Fort Day
healing

Healing Day
fiancee

Fiancee Day
lumpy rug

Lumpy Rug Day
kale

Kale Day
donate your hair

Donate Your Hair Day
get funky

Get Funky Day
china

China Day