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

Other days

martini

Martini Day
bow tie

Bow Tie Day
girl friend

Girl Friend Day
hoodie

Hoodie Day
mean girls

Mean Girls Day
bonang

Bonang Day
bounce

Bounce Day
china

China Day
hiv awareness

Hiv Awareness Day
carpenters

Carpenters Day