Oops, it doesn't look like 'museum the other day' is a national day..

Other days

bubble bath

Bubble Bath Day
first love

First Love Day
my little pony

My Little Pony Day
emoji

Emoji Day
nae nae

Nae Nae Day
brow

Brow Day
cuddle up

Cuddle Up Day
lash

Lash Day
self care

Self Care Day
fiancee

Fiancee Day