Oops, it doesn't look like 'boyfriend gone girl day' is a national day..

Other days

comfy

Comfy Day
gum

Gum Day
boba

Boba Day
lash

Lash Day
ponytail

Ponytail Day
hiv awareness

Hiv Awareness Day
stress awareness

Stress Awareness Day
law

Law Day
boyfriend

Boyfriend Day
offer

Offer Day