Beẓah

Moed (Hebrew: מועד‎, "Festivals") is the second Order of the Mishnah, the first written recording of the Oral Torah of the Jewish people (also the Tosefta and Talmud). Of the six orders of the Mishna, Moed is the third shortest. The order of Moed consists of 12 tractates:

The Jerusalem Talmud has a Gemara on each of the tractates, while in the Babylonian, only that on Shekalim is missing. However, in most printed editions of the Babylonian Talmud (as well as the Daf Yomi cycle), the Jerusalem Gemara to Shekalim is included.

In the Babylonian Talmud the treatises of the order Mo'ed are arranged as follows: Shabbat, 'Erubin, Pesachim, Rosh ha-Shanah, Yoma, Sukkah, Beitzah, Hagigah, Mo'ed Katan, Ta'anit, Megillah; while the sequence in the Jerusalem Talmud is Shabbat, Eruvin, Pesachim, Yoma, Sheqalim, Sukkah, Rosh ha-Shanah, Beitzah, Ta'anit, Megillah, Hagigah, Mo'ed' Katan.

On the Festivals, some have the custom to learn the Tractate in this Order which details the laws of that respective festival. (e.g. they would learn Tractate Rosh Hashanah on the holiday of Rosh Hashanah).

...
Wikipedia