Oops, it doesn't look like 'bff to my day' is a national day..

Other days

hoodie

Hoodie Day
self care

Self Care Day
boba

Boba Day
first love

First Love Day
self appreciation

Self Appreciation Day
pumpkin

Pumpkin Day
cat girl

Cat Girl Day
bubble bath

Bubble Bath Day
slime

Slime Day
cuddle up

Cuddle Up Day