Oops, it doesn't look like 'blog to celebrate pi day' is a national day..

Other days

buddy

Buddy Day
me

Me Day
lumpy rug

Lumpy Rug Day
ruby

Ruby Day
bubble bath

Bubble Bath Day
eat what you want

Eat What You Want Day
gum

Gum Day
bow tie

Bow Tie Day
emoji

Emoji Day
carpenters

Carpenters Day