By simply referring to those days of the week named after Norse deities !
Such as :
Tuesday"Tiu's Day" Norse God of war sometimes called Tyr, Tiv, or Tiwaz.
Wednesday"Woden's Day" (also known as Odin he is the supreme Norse God.
Thursday"Thor's Day" a son of Odin and Norse God of Thunder. Brings a new meaning to the phrase "getting hammered"!
Friday"Freya's Day" The Norse Goddess of Love and Beauty (Though there are scholars who believe that Friday was actually named after Frigga the Goddess of Fertility)