The origin of the seven-day week is the religious significance that was placed on the seventh day by ancient cultures, including the Babylonian and Jewish civilizations. Babylonians celebrated a holy day every seven days, starting from the new moon, but adjusted the number of days of the final "week" in each month so that months would continue to commence on the new moon. Jews celebrated every seventh day, within a continuous cycle of seven-day weeks, as a holy day of rest from their work, in remembrance of Creation week. The Zoroastrian calendar follows the Babylonian in relating the seventh and other days of the month to Ahura Mazda

Religious texts

Earth's tilted axis of rotation by 23 deg and no. of days required for her to revolve around herself and around sun all combined.

Radha sharma