Yahrzeit is a Jewish tradition that commemorates the anniversary of a loved one's death. It is observed by lighting a candle, known as a Yahrzeit candle, which burns for 24 hours. This practice serves as a way to honor the memory of the deceased and reflect on their life. On the day of the Yahrzeit, family members may recite the Kaddish, a prayer that praises God and expresses hope for peace. The observance typically occurs on the Hebrew calendar date of the person's passing, and it is customary to visit the grave and offer prayers or reflections.