Fasts & Mourning · Orach Chaim 549

Fast Days

5 questions · 12 opinions

Which fast days are obligatory by Torah or Rabbinic law?

3 opinions across 2 eras

Obligatory Fasts

Why do we fast on the 17th of Tammuz rather than the 9th of Tammuz, although the First Temple was breached on the 9th?

4 opinions across 2 eras

Date Selection

If one errs and eats on a fast day, must one complete the fast afterward?

1 opinions

Makeup Fasts

Is it permitted to establish a communal fast on the 9th of Tammuz in addition to the obligatory 17th?

2 opinions

Communal Practice

What is the nature of the four fasts in terms of biblical versus rabbinic obligation?

2 opinions across 2 eras

Torah vs. Rabbinic