(Yom HaShoah begins on Wed evening and ends on Thurs evening)  On April 19, 1943, the Warsaw ghetto uprising began after German troops and police entered the ghetto to deport its surviving inhabitants. By May 16, 1943, the Germans had crushed the uprising and left the ghetto area in ruins. Surviving ghetto residents were deported to concentration camps or killing centers.

Yom HaShoah is both an Israeli day of remembrance and a day of remembrance observed by many Jewish communities in the United States and elsewhere in the world as a day for the citizens of Israel to remember those murdered during the Holocaust. It is scheduled in the Jewish calendar on the 27th of Nisan, which falls in April or May.