By Dr. Devdutt Pattanaik - Author, Speaker, Illustrator, Mythologist
The seven-day-week is not based on any natural phenomena. The ancient Mesopotamians decided that the 7th, 14th, 21st and 28th days after the new moon were days of rest and that is how the concept of the week began. Sumerians believed that the Gods flooded the earth for seven days and a new world began afresh when that seven days ended.






