(Yiddish) The anniversary of a death, usually marked by the lighting of a 24-hour yahrzeit candle and the recitation of Kaddish, the memorial prayer. For U.S. Jews, the unveiling of the headstone usually takes place on or around the first yahrzeit.
This immersion is for prayer leaders who have some experience writing prayers and want to receive feedback and hone their skills as liturgists in a supportive environment.