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

Other days

frozen yogurt

Frozen Yogurt Day
chocolate milkshake

Chocolate Milkshake Day
bow tie

Bow Tie Day
bonang

Bonang Day
offer

Offer Day
stud

Stud Day
bounce

Bounce Day
pick me

Pick Me Day
lisp

Lisp Day
blanket fort

Blanket Fort Day