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

Other days

buddy

Buddy Day
gum

Gum Day
latina equal pay

Latina Equal Pay Day
hiv awareness

Hiv Awareness Day
polyamory

Polyamory Day
tulip

Tulip Day
hoodie

Hoodie Day
ruby

Ruby Day
offer

Offer Day
bubble bath

Bubble Bath Day