The name for the kickoff day for the weekend in English originates with a Norse goddess, Freyja or Freja. Freja's Day became Friday.
Freyja is the goddess of love, beauty, and fertility and was described as blonde, blue-eyed, and beautiful. The fairest of all the goddesses, according to Norse mythology, people prayed to her for happiness in love.
It is unlikely that Freja wore killer heels and short skirts and illuminated the Nordic winter nights on a bicycle as she pedalled away to a party, but let's just imagine she did, shall we?