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

Other days

my little pony

My Little Pony Day
brow

Brow Day
lumpy rug

Lumpy Rug Day
lisp

Lisp Day
kiss a ginger

Kiss A Ginger Day
reading

Reading Day
fiancee

Fiancee Day
coffee

Coffee Day
ride the wind

Ride The Wind Day
offer

Offer Day