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

Other days

slime

Slime Day
cuddle up

Cuddle Up Day
pumpkin

Pumpkin Day
azonto is acceptable

Azonto Is Acceptable Day
cat girl

Cat Girl Day
bow tie

Bow Tie Day
lash

Lash Day
ruby

Ruby Day
singles

Singles Day
coffee

Coffee Day