Yizkor

Hazkarat Neshamot (Hebrew: הַזְכָּרַת נְשָׁמוֹת, lit. 'recalling of the souls'), commonly known by its opening word Yizkor (Hebrew: יִזְכּוֹר, lit. 'may [God] remember'), is an Ashkenazi Jewish memorial prayer service for the dead. It is important occasion for many Jews, even those who do not attend synagogue regularly. In most Ashkenazi communities, it is held after the Torah reading four times a year: on Yom Kippur, on the final day of Passover, on the second day of Shavuot, and on Shemini Atzeret.

In Sephardic custom there is no Yizkor prayer, but the hashkavot serve a similar role in the service.