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

Other days

cuddle up

Cuddle Up Day
stress awareness

Stress Awareness Day
promposal

Promposal Day
pampering

Pampering Day
ask out your crush

Ask Out Your Crush Day
lisp

Lisp Day
boba

Boba Day
offer

Offer Day
hannah

Hannah Day
bow tie

Bow Tie Day