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

Other days

self care

Self Care Day
ride the wind

Ride The Wind Day
prosecco

Prosecco Day
believe

Believe Day
cursing

Cursing Day
offer

Offer Day
comfy

Comfy Day
bow tie

Bow Tie Day
buddy

Buddy Day
stress awareness

Stress Awareness Day