Tachanun:[1] Tachanun is omitted until the beginning of Cheshvon. Tzidkascha is not recited on the Shabbos in between. [1] Siddur Admur; Custom brought in Magen Avraham 669/1; Shaareiy Teshuvah 131/15; Seder Hayom [in end of section regarding Sukkos]; Kneses Hagedola; Peri Chadash 131/6 [entire month of Tishrei]; Chesed Leavraham Mayan […]