In ancient Greece, people used to honour a certain god each day of the week.
Romans took over the custom, but used the names of their own gods.
In English some of the names were replaced by the names of nordic gods.
MONDAY
TUESDAY
WEDNESDAY
THURSDAY
FRIDAY
SATURDAY
SUNDAY
This day is named after the moon.
This day is named after Tiu, the Germanic god of war and the sky.
This day is named after Woden, the chief Anglo-Saxon / Teutonic god.
This day is named after Thor, the Norse god of thunder.
This day is named after Freya, the Teutonic goddess of love and beauty.
This day is named after Saturn.
This day is named after the sun.