Oops, it doesn't look like 'tombstone yer uncle through a flaming table day' is a national day..

Other days

bubble bath

Bubble Bath Day
stud

Stud Day
artists

Artists Day
buddy

Buddy Day
hiv awareness

Hiv Awareness Day
bow tie

Bow Tie Day
raise awerness of zeus

Raise Awerness Of Zeus Day
bounce

Bounce Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
lumpy rug

Lumpy Rug Day