Oops, it doesn't look like 'draw mohammed day' is a national day..

Other days

slime

Slime Day
cuddle up

Cuddle Up Day
stud

Stud Day
coffee

Coffee Day
unicorn

Unicorn Day
offer

Offer Day
hiv awareness

Hiv Awareness Day
bow tie

Bow Tie Day
bubble bath

Bubble Bath Day
ruby

Ruby Day