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

Other days

carpenters

Carpenters Day
gum

Gum Day
brow

Brow Day
artists

Artists Day
polyamory

Polyamory Day
china

China Day
book

Book Day
eat what you want

Eat What You Want Day
law

Law Day
bow tie

Bow Tie Day