Oops, it doesn't look like 'half priced candy day' is a national day..

Other days

aloxolt

Aloxolt Day
gum

Gum Day
ask out your crush

Ask Out Your Crush Day
stud

Stud Day
singles

Singles Day
nae nae

Nae Nae Day
brow

Brow Day
lumpy rug

Lumpy Rug Day
fiancee

Fiancee Day
youth

Youth Day