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

Other days

singles

Singles Day
boba

Boba Day
blanket fort

Blanket Fort Day
martini

Martini Day
bow tie

Bow Tie Day
hannah

Hannah Day
cursing

Cursing Day
hot chocolate

Hot Chocolate Day
pumpkin

Pumpkin Day
lumpy rug

Lumpy Rug Day