Is there any proof apart from the bible and creation that a week has seven days. Like is there proof from the planets. And if not why does the whole world even those who had never seen the bible count a week as being seven days.

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    I must be grossly misunderstanding your question; isn’t the first chapter plus of Genesis a proof that a week is seven days? What exactly is your question? Can you please edit to clarify? – DonielF Sep 29 '19 at 3:34
  • I thought my question was simple for those who didnt have the bible or those who dont believe in it. Most people dont believe in creation today. – interested Oct 1 '19 at 20:06
  • Then why is this question asked on a site for those who base their lives on Judaism and all that that entails? – DonielF Oct 1 '19 at 23:54
  • DonielF You are right. But I am sorry to say that today most Jewish people dont believe in creation although they keep shabbos and new year which are dependent on it. I was proving the fallacy of it. – interested Oct 3 '19 at 7:51

why does the whole world even those who had never seen the bible count a week as being seven days.

Problem is, they didn't (my emphasis):

An eight-day week was used in Ancient Rome and possibly in the pre-Christian Celtic calendar. Traces of a nine-day week are found in Baltic languages and in Welsh. The ancient Chinese calendar had a ten-day week, as did the ancient Egyptian calendar (…)

A six-day week is found in the Akan Calendar. Several cultures used a five-day week, including the 10th century Icelandic calendar, the Javanese calendar, and the traditional cycle of market days in Korea. The Igbo have a "market week" of four days. Evidence of a "three-day week" has been derived from the names of the days of the week in Guipuscoan Basque.

The Aztecs and Mayas used (…) weeks of 13 days (known in Spanish as trecenas).


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  • Maybe a better question is why and how everyone in the world agrees on what day of the week it is now. – user9806 Sep 29 '19 at 0:07
  • You are right. But considering there were so many different days in a week why today does everyone have seven. What made everybody change their minds. – interested Oct 1 '19 at 20:07

The Babylonians associated one day with each of the seven easily observed astronomical bodies, i.e., sun, moon, and five visible planets: Mercury, Venus, Mars, Jupiter, and Saturn.

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  • I also saw this on google but find it a very flimsy reason. Who said there had to be a week anyway. Why did they need to make one. – interested Oct 1 '19 at 20:09

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