Leviticus 23:3, “There are six days for you to work. But the seventh day will be a special day of rest. It is a day for a holy meeting. You must not do any work. It is a Sabbath to the Lord in all your homes.” The feasts outlined in Leviticus begin with the weekly Sabbath, then the spring feasts and then end with the fall feasts. These times are appointed by our Creator, they are not some divination of mankind.