Special Additional Offerings of the First of the Month - Musafim
The korbanot
In the time of the Temple, the witnesses testifying to the New Moon break Shabbat to arrive in court, in order to correctly establish the additional offerings brought for the first of the Month: Rosh HaShanah 20a, 21b [2x]
Whether all of the additional offerings are necessary, their absence invalidating the Offering: Menachot 44b-45a