UnveilingA monument is erected at the grave any time after shloshim (30 days). The unveiling ceremony usually occurs around the time of the first yahrzeit. Before the ceremony, the headstone is covered with a white sheet. Either a rabbi or the family can recite psalms and say a few words about the deceased. Included are the reading of a few psalms the chanting of El Molya Rachamim, and at the end of the ceremony the covering is removed and the Kaddish is recited. This service is typically short, and is usually attended by invitation only. It is not a requirement in Judaism, but has become a tradition in the United States.