Oops, it doesn't look like 'scavenger hunt scavenger hunt day' is a national day..

Other days

unicorn

Unicorn Day
polyamory

Polyamory Day
nail polish

Nail Polish Day
bubble bath

Bubble Bath Day
hiv awareness

Hiv Awareness Day
self appreciation

Self Appreciation Day
bounce

Bounce Day
buddy

Buddy Day
ponytail

Ponytail Day
stress awareness

Stress Awareness Day