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

Other days

carpenters

Carpenters Day
law

Law Day
self care

Self Care Day
ruby

Ruby Day
fiancee

Fiancee Day
first love

First Love Day
comfy

Comfy Day
pumpkin

Pumpkin Day
blanket fort

Blanket Fort Day
boyfriend

Boyfriend Day