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

Other days

promposal

Promposal Day
prescription drug take back

Prescription Drug Take Back Day
self care

Self Care Day
boba

Boba Day
nail polish

Nail Polish Day
bubble bath

Bubble Bath Day
self appreciation

Self Appreciation Day
special education

Special Education Day
artists

Artists Day
lost sock memorial

Lost Sock Memorial Day