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

Other days

law

Law Day
unicorn

Unicorn Day
ormille

Ormille Day
bow tie

Bow Tie Day
ask out your crush

Ask Out Your Crush Day
polyamory

Polyamory Day
pick me

Pick Me Day
coffee

Coffee Day
get funky

Get Funky Day
nae nae

Nae Nae Day