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

Other days

lash

Lash Day
ask out your crush

Ask Out Your Crush Day
cat girl

Cat Girl Day
tulip

Tulip Day
camera

Camera Day
slime

Slime Day
first love

First Love Day
nail polish

Nail Polish Day
promposal

Promposal Day
ormille

Ormille Day