During three periods of the year all [twenty-four] watches were equal in the prescribed offerings of the festivals and in the division of the Panim Bread.  On Shavuos they would say to him, “Here is matzah for you; here is chametz for you!”  The watch whose time [of service] was fixed —- [only] it offers the daily burnt-offerings, vow-offerings, freewill-offerings, the remaining public offerings, and [this watch] offers everything.  If a festival fell near a Sabbath, either before it or after it, all the watches shared equally in the division of the Panim Bread.

On the first festival day of Succos there were thirteen bullocks, two rams, and one he-goat; there remained fourteen yearling sheep for eight watches.  On the first day six [of the watches] offered up two each, and the rest [offered] one each. On the second [day] five offered up two each, and the rest one each. On the third [day] four offered up two each, and the rest one each. On the fourth [day] three offered up two each, and the rest one each. On the fifth [day] two offered up two each, and the rest one each. On the sixth [day] one offered up two, and the rest, one each. On the seventh [day] all were equal.  On the eighth [day] they reverted to [casting] lots as on the [other] festivals.  [The Sages] said, “Whoever offered up bullocks today should not offer them tomorrow”; but they took turns in rotation.