When do the restrictions of 3 weeks start when 17 Tammuz is on Shabbos (e.g. this year)? Do they start motzei shabbos (already 18 Tammuz), since the 17 Tammuz is technically on shabbos or do they ...
On fast days that begin in the morning, (Asara B'Teves, Taanis Esther, Shiva Asar B'Tamuz, Tzom Gedalya) if you intend to eat when you awake, until what time may you eat in the morning? Does it depend ...
If I fly westward on a fast day, and travel through one/several time zone/s, thereby going back in (clock) time, must I then fast until it ends in my current time zone? What if I fly eastward, thereby ...
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.)