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

Other days

martini

Martini Day
china

China Day
kale

Kale Day
bounce

Bounce Day
bonang

Bonang Day
first love

First Love Day
kiss a ginger

Kiss A Ginger Day
frozen yogurt

Frozen Yogurt Day
believe

Believe Day
blanket fort

Blanket Fort Day