Derivations of the German and English Days of the Week
Sunday, (Saxon) Sunnandaeg, day of the sun.
Monday, (German) Montag, day of the moon.
Tuesday, (Anglo-Saxon) Tiwesdaeg, from Tiw, the god of war.
Wednesday, (Anglo-Saxon) Wodnesdaeg, from Odin, the god of storms.
Thursday, (Danish) Thor, the god of thunder.
Friday, (Saxon) Frigedaeg, day of Freya, goddess of marriage.
Saturday, the day of Saturn, the god of time.
The names of the seven days of the week in the languages derived from the Latin originated with the Roman astronomers. They gave them the names of the sun, moon, and five planets, viz.: Mars, Mercury, Jupiter, Venus and Saturn.