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

Other days

ruby

Ruby Day
cursing

Cursing Day
carpenters

Carpenters Day
cuddle up

Cuddle Up Day
bow tie

Bow Tie Day
unicorn

Unicorn Day
lash

Lash Day
healing

Healing Day
book

Book Day
buddy

Buddy Day