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

Other days

comfy

Comfy Day
buddy

Buddy Day
boba

Boba Day
bonang

Bonang Day
ponytail

Ponytail Day
ormille

Ormille Day
kiss a ginger

Kiss A Ginger Day
boy friend

Boy Friend Day
hannah

Hannah Day
self care

Self Care Day