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

Other days

aloxolt

Aloxolt Day
hannah

Hannah Day
tell a fairytale

Tell A Fairytale Day
believe

Believe Day
ruby

Ruby Day
cuddle up

Cuddle Up Day
nail polish

Nail Polish Day
kiss a ginger

Kiss A Ginger Day
carpenters

Carpenters Day
camera

Camera Day