Lubavitch on the Palisades in Tenafly commemorates the Lubavitcher rebbe’s 21st yahrzeit with a trip to his gravesite. Light dinner. Buses leave from the Beth Aharon Forem Chabad House, 11 Harold Street in Tenafly, 6 p.m. Reservations, 201) 871-1152, Rabbi@Chabadlubavitch.org, or www.chabadlubavitch.org.