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

Other days

book

Book Day
bow tie

Bow Tie Day
reading

Reading Day
boy friend

Boy Friend Day
ask out your crush

Ask Out Your Crush Day
pampering

Pampering Day
ruby

Ruby Day
lisp

Lisp Day
aloxolt

Aloxolt Day
brow

Brow Day