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

Other days

lash

Lash Day
singles

Singles Day
aloxolt

Aloxolt Day
stud

Stud Day
gum

Gum Day
reading

Reading Day
nae nae

Nae Nae Day
kiss a ginger

Kiss A Ginger Day
self appreciation

Self Appreciation Day
martini

Martini Day