tion:1How many days are in a WEEK?William ShawAnswered November 27, 2019The French revolutionaries of 1789, had ten days in the week. This did not last long because working people were exhausted before END of the ten day week. Eventually sanity prevailed and the week reverted to seven days, just as had been instituted in the Pentateuch of the Holy Bible, making Sunday, the first day of the week, the day of rest on which everyone was prohibited from doing SERVILE work, giving time for the worship of God.As the angular rotation speed of the Earth becomes less, astronomers can decide what to do about this situation. There will only be a significant noticeable slowing down of the Earth’s rotation several MILLION years after the year 2020. At that time there will probably be an artificial seven day week consisting of twenty-four hour in each day as at PRESENT while the Earth might take fifty or more hours to complete a rotation. That is Sunrise will be every twenty-five hours.