Yud Aleph Nissan, the 11th day of Nisan in the Hebrew calendar (Hebrew: י"א ניסן‎) is the birthday of Rabbi Menachem Mendel Schneerson (1902–1994), the last leader of the Chabad dynasty of Hasidism until his death in 1994, and is celebrated by his followers as a festival. The day has been marked by public parades since 1992, when Rabbi Schneerson, was in 770 Eastern Parkway recovering from a stroke. The day is marked with many Mitzvah Tank parades around the world and with an annual official Tzivos Hashem rally, particularly in Crown Heights, Brooklyn.