Oops, it doesn't look like 'adopt from a shelter day' is a national day..

Other days

healing

Healing Day

unicorn

Unicorn Day

self appreciation

Self Appreciation Day

latina equal pay

Latina Equal Pay Day

cuddle up

Cuddle Up Day

Me Day

bow tie

Bow Tie Day

ormille

Ormille Day

my little pony

My Little Pony Day

eat what you want

Eat What You Want Day