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

Other days

bonang

Bonang Day
cat girl

Cat Girl Day
one

One Day
kiss a ginger

Kiss A Ginger Day
aloxolt

Aloxolt Day
ruby

Ruby Day
cuddle up

Cuddle Up Day
gum

Gum Day
believe

Believe Day
coffee

Coffee Day