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

Other days

buddy

Buddy Day
frozen yogurt

Frozen Yogurt Day
unicorn

Unicorn Day
latina equal pay

Latina Equal Pay Day
one

One Day
bounce

Bounce Day
china

China Day
lumpy rug

Lumpy Rug Day
self care

Self Care Day
first love

First Love Day