I am sure if you wait a few hours -- that side of the world will wake and you will get your answer.
Just in case you cannot wait...
According to Google:
Glædelig jul!
Glad helligdage!
Glade feriedage!
Merry Christmas = Glædelig jul.
Merry Christmas = God Jul.
Happy Holidays = God ferie. ( Men det bruges ikke i anledningen af jul her i Danmark)