It happened last in 1888 and, according to one calculation, won’t happen again for another 77,798 years—the convergence of Thanksgiving and Hanukkah.

This year, November 28 is Thanks­giving and the first full day of the eight-day Jewish festival of lights, which begins at sundown the previous night.

For many Jewish Americans, this is not trivial but a once-in-an-eternity opportunity to celebrate two favorite holidays simultaneously, one quintessentially American, the other quintessentially Jewish.