On which days and times is Tachanun/Nefilat Apayim omitted due to festive or semi-festive character?
Synopsis
The Mechaber and Rema enumerate a long list of days when Nefilat Apayim is not recited, including Tu B'Av, Tu BiShvat, Rosh Chodesh (and Mincha preceding it), Chanukah, Purim, Lag BaOmer, Erev Yom Kippur, Erev Rosh Hashana, the entire month of Nissan, the 9th of Av, the period between Yom Kippur and Sukkot, and from Rosh Chodesh Sivan through Shavuot (Rema).
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