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

Other days

promposal

Promposal Day
stress awareness

Stress Awareness Day
blanket fort

Blanket Fort Day
pampering

Pampering Day
lumpy rug

Lumpy Rug Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
polyamory

Polyamory Day
chocolate milkshake

Chocolate Milkshake Day
ruby

Ruby Day
raise awerness of zeus

Raise Awerness Of Zeus Day