Oops, it doesn't look like 'conference on the day' is a national day..

Other days

one

One Day
tulip

Tulip Day
singles

Singles Day
first love

First Love Day
get funky

Get Funky Day
bow tie

Bow Tie Day
ride the wind

Ride The Wind Day
brow

Brow Day
lisp

Lisp Day
polyamory

Polyamory Day