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

Other days

lisp

Lisp Day
artists

Artists Day
healing

Healing Day
my little pony

My Little Pony Day
boba

Boba Day
tell ur crush you like them

Tell Ur Crush You Like Them Day
nae nae

Nae Nae Day
bonang

Bonang Day
brow

Brow Day
kiss a ginger

Kiss A Ginger Day