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

Other days

special education

Special Education Day
boba

Boba Day
tulip

Tulip Day
pampering

Pampering Day
gum

Gum Day
self appreciation

Self Appreciation Day
girl friend

Girl Friend Day
self care

Self Care Day
stud

Stud Day
law

Law Day