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

Other days

artists

Artists Day
lisp

Lisp Day
cuddle up

Cuddle Up Day
special education

Special Education Day
nae nae

Nae Nae Day
chocolate milkshake

Chocolate Milkshake Day
bow tie

Bow Tie Day
aloxolt

Aloxolt Day
blanket fort

Blanket Fort Day
gum

Gum Day