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

Other days

book

Book Day
slime

Slime Day
believe

Believe Day
nail polish

Nail Polish Day
comfy

Comfy Day
offer

Offer Day
bubble bath

Bubble Bath Day
kale

Kale Day
cuddle up

Cuddle Up Day
healing

Healing Day