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

Other days

singles

Singles Day
pumpkin

Pumpkin Day
frozen yogurt

Frozen Yogurt Day
slime

Slime Day
fiancee

Fiancee Day
book

Book Day
self appreciation

Self Appreciation Day
self care

Self Care Day
cat girl

Cat Girl Day
lumpy rug

Lumpy Rug Day