A religious day marking the Shoah or Holocaust. In the UK, non-Jews hold a Holocaust Memorial Day.

Memorializes the six million Jews who died as victims of the Nazis during World War II and emphasizes respect for human dignity. Its observance is not limited to Jews. (Judaism)

(Jewish) Holocaust Day — This day has been established to remember the six million Jews killed by the Nazis in 1933-45 c.e.; Observed by many non-Jews as well