Machlokes Rebbi Yossi V'Rabbanan (Shabbos 87)
The Rabbanan say that Rosh Chodesh Sivan was on Monday, Rebbi Yossi says it was on Sunday. I was wondering what the molad was. The sefer Itim L'Binah (Yosef Ginzburg, Warsaw, 5649, reprinted in Israel) says that the molad Nisan for that year was 5-2-332 (5 days, 2 hrs, 332 chalakim), so then molad Iyar was 6-15-45 and molad Sivan was 1-3-838. He has a long discussion to explain why Moshe Rabbeinu made Rosh Chodesh Nisan on Thursday, however basically, Hashem showed him the new moon during the day, and told him to be Me'kadaish the Chodesh then. Anyway, according to this, Rosh Chodesh Sivan should be on Monday (the new moon was not yet visible on Sunday night). However, this molad is the molad benoni, the molad amiti is different. For Nisan of that year, the molad amiti was Wed. at noon, (earlier than the molad beboni) , however, the sefer does not discuss when the molad of Sivan might have been.
posted by A yid @ 12:58 PM
2 Comments:
Interesting. I don't understand that much about the molad but these times you're giving are for Eretz Yisrael, right? Would it be different in Mitzrayim?
Interesting question. The calculated molad (the molad benoni) is always for Eretz Yisrael. The calculated molad starts from the creation of the world, when the sun and moon began to orbit, which was 6-14-0. There is actually a molad that was calculated backwards to the imaginary Tishrei before the world was created. It is 2-5-204 and is called "Molad Tohu". All molads, include the one we use today, are calculated forward from this one. It is quite possible that the new moon that Hashem showed Moshe Rabbeinu was the new moon as it was visible in Eretz Yisrael.
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