Oops, it doesn't look like 'games of the day' is a national day..

Other days

ruby

Ruby Day
nail polish

Nail Polish Day
get funky

Get Funky Day
fiancee

Fiancee Day
unicorn

Unicorn Day
offer

Offer Day
bubble bath

Bubble Bath Day
self care

Self Care Day
brow

Brow Day
lisp

Lisp Day