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

Other days

tulip

Tulip Day
slime

Slime Day
ruby

Ruby Day
frozen yogurt

Frozen Yogurt Day
pumpkin

Pumpkin Day
believe

Believe Day
kale

Kale Day
tell a fairytale

Tell A Fairytale Day
cursing

Cursing Day
blanket fort

Blanket Fort Day