Bar Mitzvah age- by which calendar?

In my Reform congregation there are a fair number of adults becoming bar/bat mitzvah, often but not always, adult converts.

Sidebar: some people decide to go through a second bar/bat mitzvah at age 83.


Not to be confused with an adult bar/bat mitzvah, a ceremony for adults who never marked this rite of passage, the optional “second bar mitzvah” is an opportunity for older adults to reaffirm their commitment to Judaism and bring their loved ones together.

While one can opt for this ceremony at any age, the most common age is 83. The reasoning is that it is 13 years after 70, the life expectancy described in Psalm 90: “The span of our life is 70 years, or, given the strength, 80 years; but the best of them are trouble and sorrow. They pass by speedily, and we are in darkness.”

Rabbi Rachel Timoner, of Congregation Beth Elohim, a Reform synagogue in Brooklyn, N.Y., said her congregation hosted a double bar mitzvah: A longtime congregant celebrated his second bar mitzvah, at age 83, on the same day a 13-year-old member had marked his very own rite of passage.

“It was really meaningful,” she said. “It’s a beautiful way to make intergenerational links in a community and a beautiful way to honor a person reaching the milestone of age 83.”