Oops, it doesn't look like 'i love you to death day' is a national day..

Other days

carpenters

Carpenters Day
one

One Day
cuddle up

Cuddle Up Day
promposal

Promposal Day
pick me

Pick Me Day
stud

Stud Day
boy friend

Boy Friend Day
prosecco

Prosecco Day
buddy

Buddy Day
boba

Boba Day