A yahrzeit candle, also spelled yahrtzeit candle or called a memorial candle, (Hebrew: נר נשמה, ner neshama, meaning "soul candle"; Yiddish: יאָרצײַט ליכט yortsayt likht, meaning "anniversary candle") is a type of candle that is lit in memory of the dead in Judaism.
This kind of candle, that burns up to 26 hours, is also lit on the eve of Yom Kippur or of the Holocaust Remembrance Day ceremony (Yom HaShoah) to burn through the entire occasion. (Judaism reckons "days" to begin at sundown, in accordance with Genesis, e.g., 1:5: "And there was evening and there was morning, one day.")
The use of a yahrzeit candle is a widely practiced custom, where mourners light a yahrzeit candle that burns for 24 hours, on the anniversary of the death on the Hebrew calendar. The word "yahrzeit" (Yiddish: יאָרצײַט yortsayt ) itself means "anniversary" (or more specifically "anniversary [of a person's death]") in Yiddish, originating from German Jahr, year, and Zeit, time. It is customary to light the candle inside one's home, or near the grave of the deceased. The candle is also lit on Yom Kippur and there are also customs to light a yahrzeit candle on the dates when yizkor is said (Yom Kippur, Shemini Atzeret, final day of Pesach, and Shavuot). It is also customary to light the candle during the shiva, usually a larger one that lasts the entire seven days. The custom of lighting a yahrzeit candle comes from the Book of Proverbs 20:27 "The soul of man is a candle of the Lord."