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

Other days

aloxolt

Aloxolt Day
pick me

Pick Me Day
camera

Camera Day
ruby

Ruby Day
cuddle up

Cuddle Up Day
frozen yogurt

Frozen Yogurt Day
bow tie

Bow Tie Day
artists

Artists Day
pumpkin

Pumpkin Day
reading

Reading Day