Pesach Sheni is the 14th of Iyar, which is a month after Pesach. In the times of the Bet HaMikdash, Pesach Sheni was a day for the people, who couldn't bring the Korban Pesach on Pesach either because they were impure or were too far away from Yerushalayim, to bring a makeup Korban.
Minhagim of the Day
- Bamidbar 9:11-13, Rambam (Korban Pesach 5:1)
- Aruch HaShulchan 131:12, Nitai Gavriel (Pesach v. 3, p. 325)
- Pri Megadim M"Z 131:15. Rav Schachter in a shiur ("Sefirat Haomer", min 50) on yutorah holds that one should say tachanun on Pesach Sheni. Rav Scahchter (Piskei Corona #35) writes that there's no reason to omit tachanun on Pesach Sheni since the korban pesach wasn't brought on the first pesach, pesach sheni isn't established as a pesach sheni since it is only meant as a makeup for the original bringing of the korban pesach.
- Nitai Gavriel (Pesach v. 3, p. 330) citing the general minhag.
- Nitai Gavriel (Pesach v. 3, p. 330) citing the Chabad and Satmer minhag.
- Nitai Gavriel (Pesach v. 3, p. 330) citing the Lithuanian minhag. Rav Scahchter (Piskei Corona #35) cites that the Chazon Ish (Orchot Rabbenu v. 2 p. 97) held that there was no point in eating matzah on pesach sheni.