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

Other days

first love

First Love Day
cuddle up

Cuddle Up Day
unicorn

Unicorn Day
latina equal pay

Latina Equal Pay Day
kale

Kale Day
gallery

Gallery Day
offer

Offer Day
azonto is acceptable

Azonto Is Acceptable Day
camera

Camera Day
tulip

Tulip Day