Mourners cannot recite the Kaddish in private, as it requires a quorum of 10 adult males. Jewish people recite the Kaddish at morning and evening services, on days of fasting and on the Sabbath and holidays. Mourners observe basic religious etiquette to say the mourner's Kaddish. If the mourner must ride to the synagogue, which is not allowed on the Sabbath, he instead prays at home, but cannot recite the Kaddish, out of respect for the dead and the law.
After the closing of the grave, the mourner says the Burial Kaddish. Upon returning from the burial, the mourner begins the first service by saying the Kaddish. The mourner says the Kaddish for a full year for his parents, as they are under divine judgment, according to Jewish beliefs. Since a year signifies the judgment period for the wicked, some mourners recite the Kaddish only for 11 months.
It is acceptable to recite the Rabbi's Kaddish in the 12th month. The mourner recites the Kaddish for 30 days for siblings and offspring. The Rabbi typically asks the mourner to say a blessing over the Torah on the day of the last mourner's Kaddish. The mourner's Kaddish is several centuries old. It is a prayer of praise and thanksgiving, and it concludes with a petition for peace.