Light of the ner zikaron / ner neshama, a 25 hours yahrzeit candle in memory of the deceased person - stock photo

A yahrzeit candle, or memorial candle (Heb. 'ner neshama', 'soul candle'), lit in memory of the deceased person at the anniversary date of his passing (Hebrew calendar and day beginning at sundown in accordance with Genesis 1:5: "And there was evening and there was morning, one day.")Also lit the days when 'Yizkor' is said - before the sundown of day when it is said (Yom Kippur, Shemini Atzeret, final day of Pesach, Shavuot). Also during the shiva.The custom of lighting a yahrzeit candle comes from the Book of Proverbs 20:27 by King Shlomo "The soul of man is a candle of the Lord."