The festival calendar, and the word at the top of it is not about celebrating — mo’ed means an appointment fixed in advance. What follows is a schedule: sabbath, Passover, Unleavened Bread, the first barley, a fifty-day count, the day of blowing, the Day of Atonement, and seven days in booths. One undefined phrase — on the morrow after the sabbath — split Second Temple Judaism, because the chapter never says which sabbath.