Oops, it doesn't look like 'Grape Ice Pop day' is a national day..

Other days

camera

Camera Day
bow tie

Bow Tie Day
polyamory

Polyamory Day
donate your hair

Donate Your Hair Day
cat girl

Cat Girl Day
bonang

Bonang Day
pampering

Pampering Day
slime

Slime Day
first love

First Love Day
ruby

Ruby Day