Week-day names - Wikipedia, the free encyclopedia

"Days of the Week" redirects here. For the song, see Days of the Week (song). Italian cameo bracelet representing the days of the week, corresponding to the planets as Roman gods: Diana as the Moon for Monday, Mars for Tuesday, Mercury for Wednesday, Jupiter for Thursday, Venus for Friday, Saturn for Saturday, and Apollo as the Sun for Sunday. Middle 19th century, Walters Art Museum Heptagram of t

[pho]

天動説で遠い順に(1,...,7)=(土星、木星、火星、太陽、金星、水星、月)とする。mod7で考えると1, 1+24=1+3=4, 1+24*2=7, 3, 6, 2, 5となるので、(1,4,7,3,6,2,5)=(土日月火水木金)となるのか。面白い。