Is it permitted to fast on Erev Shabbos or Erev Yom Tov? I've heard about people taking on fasts until chatzos, but no later. What is the halacha on this?
This year Asara B'Teveis came out on a Friday. Suppose you would Daven Mincha before Plag and Kaballas Shabbos right after Plag and come home when it is still light outside, would you be allowed to ...
Are there different shitos for when fasts end? (Similar Motzei Shabbos, when some people wait 72 minutes past shkiya to do melacha, where other people wait less.)