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

Other days

self care

Self Care Day
bow tie

Bow Tie Day
kale

Kale Day
my little pony

My Little Pony Day
lisp

Lisp Day
get funky

Get Funky Day
blanket fort

Blanket Fort Day
boba

Boba Day
bonang

Bonang Day
carpenters

Carpenters Day