Why do we say a longer Tachanun on Mondays and Thursdays compared to the other days of the week?

  • Mondays and Thursdays are the two traditional fasting days of Second Temple Judaism. They were most likely chosen due to their being equally distanced from each other and from the Sabbath, so that the pious people might be provided with a constant and balanced opportunity to remember the Torah.
    – user18041
    Sep 28, 2018 at 7:24

1 Answer 1


I found three reasons in Aruch HaShulchan 234. Here's my summary:

  1. These are days of acceptance (רצון). The reason for this being that Moshe Rabeinu ascended Mt. Sinai for the second tablets on Thursday and descended on Monday.

  2. These are days of judgment (דין). The courts in heaven and the earthly courts convene on these days. The sign for this is that the Maadim (Mars).

  3. Three zekanim (scholars) who were miraculously saved from a bishop who tried to burn them established this minhag.

  • 1
    Summarizing the summarized reasons here would be helpful, specially for those of us who read English but not Hebrew.
    – msh210
    Jul 5, 2011 at 21:48
  • 1
    @msh210 Here in Israel it is passed midnight ... I'll try to do just that b"n tomorrow. Thanks for the remark. Jul 5, 2011 at 21:52
  • 2
    David, what is your basis for saying that the many reasons is an indication of "trouble establishing" as a minhag
    – YDK
    Jul 5, 2011 at 21:56
  • @YDK First, it is very long and repetitive and most people I know are pretty happy when there is any reason not to say it. Second, is that the Beit Yosef had to label one who doesn't say it standing a poretz gader. Jul 5, 2011 at 22:08

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