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

Other days

healing

Healing Day
cursing

Cursing Day
nae nae

Nae Nae Day
hiv awareness

Hiv Awareness Day
frozen yogurt

Frozen Yogurt Day
cuddle up

Cuddle Up Day
ruby

Ruby Day
first love

First Love Day
tulip

Tulip Day
bounce

Bounce Day