Venue: YU Torah MiTzion Beit Midrash Zichron Dov YU Torah MiTzion Beit Midrash Zichron Dov

Gemara:

Rosh Hashana,  Sanhedrin 

Halacha:

Jewish Calendar 

Collections: Rabbi Torczyner Minchas Chinuch

References: Rosh Hashana: 25a ,  Rosh Hashana: 30b ,  Sanhedrin: 11a  

Description

Discussion of whether Beis Din has the authority to rig a leap year, intercalating Adar Sheni, even without sufficient warrant, and whether their decisions on Adar Sheni automatically stand, in a manner similar to their power regarding malei (30 day) and chaser (29 day) months. Also includes a note on resolving the conflict between the power of beis din to change Rosh Chodesh retroactively and the problem of נתקלקלו הלויים בשיר.