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

Other days

healing

Healing Day
hot chocolate

Hot Chocolate Day
first love

First Love Day
my little pony

My Little Pony Day
youth

Youth Day
slime

Slime Day
ruby

Ruby Day
ride the wind

Ride The Wind Day
carpenters

Carpenters Day
get funky

Get Funky Day