More Discussions for this daf
1. Bein ha'Shemashos 2. Rashi DH ve'Simanach Kavsa 3. Rabeinu Tam's 72 minutes
4. Rebbi Nechemia's Bein ha'Shemashos 5. Rabeinu Tam's 72 minutes, and 40a: Rav being refuted by a 6. Rebbi Yehudah's Bein ha'Shemashos
7. Sunset at Karmel 8. Does Bein Hashmashot vary from country to country or is it fixed? 9. Miriam's well
10. Bein ha'Shemashos 11. Six Teki'os
DAF DISCUSSIONS - SHABBOS 35

Eli Turkel asked:

1. Rabbeinu Tam's opinion of 72 (or even 96 minutes) for night after the

setting of the sun contradicts known facts. Obviously half an hour

after sunset in the springtime in Jerusalem the entire sky is quite dark

with numerous stars. It is well known that the "bein hashamosot" is much

shorter in Jerusalem (or babylonia) than in northern Europe.

The Gra in Shulcahn Arukh notes that the time between dawn and sunrise

differs much from the time betwwen between sunset and stars. However,

he doesn't seem to be bothered by the little time it takes 3 stars

even small stars to appear.

Kol Tuv,

Eli Turkel

The Kollel replies:

The Vilna Ga'on (Shenos Eliyahu, beginning of Berachos) indeed asks explicitly that it does not take that long for three stars to appear, and he answers, like you wrote, that it depends on the geographical location.

-Mordecai