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Talk:When Does Shabbat End?: Difference between revisions

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*Zevachim 56a says that the pasuk invalidates the blood of a korban after shekiya. Why is that necessary? Isn't it clear from the Gemara Megillah that all avoda is pasul at night and once the morning hits it'll be pasul anyway. What then is added with this pasuk? Rabbenu Tam proves from here that day usually goes until the second shekiya, however, blood is invalid at the first shekiya, astronomical sunset.
*Zevachim 56a says that the pasuk invalidates the blood of a korban after shekiya. Why is that necessary? Isn't it clear from the Gemara Megillah that all avoda is pasul at night and once the morning hits it'll be pasul anyway. What then is added with this pasuk? Rabbenu Tam proves from here that day usually goes until the second shekiya, however, blood is invalid at the first shekiya, astronomical sunset.
*Tanit 12a which states that a tanit is not finished until shekiya clearly means the end of shekiya since it couldn't be permitted at sunset, which is still day.
*Tanit 12a which states that a tanit is not finished until shekiya clearly means the end of shekiya since it couldn't be permitted at sunset, which is still day.
*Shabbat 21b establishes the time for Chanuka candles to be משתקע החמה and it is impossible for that to be at sunset since there's no use in lighting a candle when it is still light outside. Rather it means lighting it at the end of the second shekiya.
*Shabbat 21b establishes the time for Chanuka candles to be משתקע החמה and it is impossible for that to be at sunset since there's no use in lighting a candle when it is still light outside. Rather it means lighting it at the end of the second shekiya.
== Answers for Rabbenu Tam's Proofs ==
* Zevachim 56a: The Gra mentions this gemara and finds it isn't an issue with his approach, though he doesn't clarify how.
* Tanit 12a: The Gra YD 262:9 explains that fundamentally it should be permitted to eat during ben hashemashot of a rabbinic fast day, however, because we follow the opinion of Rabbi Yosi and Rabbi Yosi's ben hashemashot is after Rabbi Yehuda's, it is indeed forbidden to eat during the entire duration of ben hashemashot of Rabbi Yehuda.
* Shabbat 21b: Maharam Alshaker 96 and Gra dispute Rabbenu Tam's assumption about the language משתקע החמה. They say that the language in fact implies the beginning of shekiya and say that one should light at the beginning of shekiya. They don't directly address the issue of lighting while it is light outside.
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