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The Halakhic Definition of Night and the Principles of Astronomy

Speaker:: Dr William Gewirtz
Date:: July 05 2021

Downloads:: 61

Views:: 984
Comments:: 0

Halacha:

Zmanim

Publication: Torah u-Madda Journal Volume 18: 2020-2021

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CATEGORY

Zemannim: On the Introduction of New Constructs in Halakhah
- Speaker: Dr William Gewirtz
- Date: Oct 7, 2013
- Halacha:
  
  Zmanim
  
  Machshava:
  
  General
- Download
- Read Later
kinnin - shiur 3
- Speaker: Dr William Gewirtz
- Date: May 9, 2012
- Mishna:
  
  Kinnim
- Duration: 1 hr 12 min
kinnim shiur 2
- Speaker: Dr William Gewirtz
- Date: May 8, 2012
- Mishna:
  
  Kinnim
- Duration: 57 min

kinnim - shiur 1
- Speaker: Dr William Gewirtz
- Date: May 7, 2012
- Mishna:
  
  Kinnim
- Duration: 42 min

Neiros Timing, A Taste of the Bein ha-Shemashos Sugyos, and a Palette of Chanukka Issues | Hilchos Shabbas #10 (and Chanukka - Orach Chaim simanim 261, 672)
- Speaker: Rabbi Tanchum Cohen
- Date: Dec 18, 2025
- Series: YU Undergrad Chabura
  Venue: YU Wilf Campus
  
  Gemara:
  
  Pesachim, Shabbat
  
  Halacha:
  
  Chanukah, Contemporary Issues, Shabbat, Zmanim
- Duration: 55 min
The World of Bein ha-Shemashos and Bris Delays, continued | Hilchos Milah #7 [Yoreh Deah 262:4-7, 266:8-9]
- Speaker: Rabbi Tanchum Cohen
- Date: Dec 16, 2025
- Venue: Cong. Beth Abraham (Bergenfield, NJ)
  
  Gemara:
  
  Pesachim, Shabbat
  
  Halacha:
  
  Brit Milah, Chanukah, Science & Medicine, Shabbat, Zmanim
  
  Machshava:
  
  Torah U'Madda
- Duration: 54 min
What To Do When One Will Not Be Home To Light Chanukah Candles on Time
- Speaker: Rabbi Shay Schachter
- Date: Dec 11, 2025
- Venue: Stern College
  
  Halacha:
  
  Chanukah, Zmanim
  
  Machshava:
  
  Chanukah
- Duration: 26 min

Behind the 8-Ball, part 2: The World of Bein ha-Shemashos and Bris Delays | Hilchos Milah #6 [Yoreh Deah 262:4-7, 266:8-9]
- Speaker: Rabbi Tanchum Cohen
- Date: Dec 9, 2025
- Venue: Cong. Beth Abraham (Bergenfield, NJ)
  
  Gemara:
  
  Berachot, Pesachim, Shabbat
  
  Halacha:
  
  Brit Milah, Chanukah, Orach Chaim, Science & Medicine, Shabbat, Shema, Yoreh Deah, Zmanim
  
  History:
  
  18th Century CE, 20th Century CE
  
  Machshava:
  
  Chassidut
  
  Mishna:
  
  Shabbat
  
  Holidays:
  
  Kislev
  
  Personalities:
  
  Rav Kook, Rav Yosef Dov Soloveitchik
- Duration: 56 min
A Yekke's Nightmare: When Late is Better than On-Time | Hilchos Milah #4 [Yoreh Deah 262:1]
- Speaker: Rabbi Tanchum Cohen
- Date: Nov 18, 2025
- Venue: Cong. Beth Abraham (Bergenfield, NJ)
  
  Gemara:
  
  Berachot, Menachot, Shabbat, Zevachim
  
  Halacha:
  
  Brit Milah, Kiddush Levana, Korbanot, Kriyat HaTorah, Orach Chaim, Rosh Hashana, Shabbat, Tefillah, Yoreh Deah, Zmanim
  
  Machshava:
  
  Kabbalah, Mitzvot
- Duration: 50 min
Unpacking the Igros: The Gr"a, Satmar Rov, and Airplanes (Zmanim - Part #3)
- Speaker: Rabbi Moshe Kurtz
- Date: Nov 4, 2025
- Halacha:
  
  Brachot, Shabbat, Zmanim
- Duration: 48 min

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