The names of the days of the week come from ancient Roman and Norse mythology. The Romans named the days after the seven planets they could see, which were also associated with gods. These were later adapted into different languages:Sunday – from the Sun (Latin: "dies Solis")Monday – from the Moon (Latin: "dies Lunae")Tuesday – from Mars, the god of war (Norse equivalent: Tyr → “Tiw’s Day”)Wednesday – from Mercury (Norse equivalent: Odin/Woden → “Woden’s Day”)Thursday – from Jupiter (Norse equivalent: Thor → “Thor’s Day”)Friday – from Venus (Norse equivalent: Frigg/Freya → “Frigg’s Day”)Saturday – from Saturn, the Roman god of agriculture (Latin: "dies Saturni")These ancient beliefs and names were passed down and still influence modern calendars.