Study Arakhin folio 9B with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
The Talmud asks: With regard to what principle do Rav Huna and Ulla disagree? The Talmud answers: They disagree about the length of the month added in the intercalation of the year, as it is taught in a baraita: How many days are added in the intercalation of the year? 30 days. Rabban Shimon ben Ga
The Talmud raises an objection to the opinion of Rav Huna from a baraita: The festival of Shavuot occurs only on the same day of the week as the day of waving the omer offering, i.e., the 16th of Nisan, which is the 2nd day of Passover. And Rosh HaShana also occurs only on the same day of the week a
The Talmud elaborates: There are 6 ends of months between the omer offering and Rosh HaShana. In an ordinary year the months alternate in length, so these 6 months will comprise 3 full and 3 deficient months. If so, Rosh HaShana will occur on the same day of the week as the 3rd day of Passover. If a
And if no extra deficient months are added that year, but the standard format of alternating lengths of months, one full and one deficient, is applied, Rosh HaShana will occur on the day of the week that occurs on the night after the waving of the omer offering.
But according to Rav Huna, who says: We may establish 8 full, 30-day months in a year, there are also times when you find that Rosh HaShana occurs on the night after the night after the extra day, i.e., the 30th of Nisan, two days after the day of the week of the omer offering. This would occur on