If a parent dies in Adar during a leap year, which Adar does one fast in for Yahrzeit?

If one vows to fast on a specific day and forgets to fast, eating a kezayit, must he complete that day's fast?

2 opinions

If one vows to fast one or two days without specifying which days, and forgets to eat, does the fast become void and require compensation?

1 opinions

If one vows to fast ten days (unspecified) but must break the fast mid-vow for a mitzvah or honor, can the fast be 'borrowed' and repaid later?

4 opinions

Can one vow to fast a number of days without specifying them, and later reschedule the fasts to winter?

2 opinions

Can consecutive fasts be equated with non-consecutive fasts as equivalent fulfillment?

3 opinions

May one fast for a dream (or other personal fast) on a festival day, Hol Hamoed, Rosh Hodesh, Hanukkah, Purim, or the day before Yom Kippur?

1 opinions

Are public fasts observed in Babylonia (post-rabbinic diaspora tradition) with the same strictures as Yom Kippur?

2 opinions

Must one fast on the anniversary of a parent's death, or may one fast on the day of burial instead?

1 opinions