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

Other days

china

China Day
brow

Brow Day
hiv awareness

Hiv Awareness Day
frozen yogurt

Frozen Yogurt Day
pick me

Pick Me Day
gum

Gum Day
bonang

Bonang Day
comfy

Comfy Day
kiss a ginger

Kiss A Ginger Day
kale

Kale Day