Oops, it doesn't look like 'smoke a cigar day' is a national day..

Other days

slime

Slime Day
fiancee

Fiancee Day
cat girl

Cat Girl Day
tulip

Tulip Day
mean girls

Mean Girls Day
bonang

Bonang Day
healing

Healing Day
cuddle up

Cuddle Up Day
lash

Lash Day
believe

Believe Day