Oops, it doesn't look like 'spinach and nougat day' is a national day..

Other days

china

China Day
bow tie

Bow Tie Day
ponytail

Ponytail Day
aloxolt

Aloxolt Day
promposal

Promposal Day
gum

Gum Day
bonang

Bonang Day
boba

Boba Day
frozen yogurt

Frozen Yogurt Day
ruby

Ruby Day