A. Of course it is possible, if his Bar-Mitzvah reading falls in the portion of Vayera, where this story is told. It’s usually read in November. In 1991 it was read on October 26th. www.Chabad.org/Calendar is a much more comprehensive and user-friendly Jewish calendar site (that has tools for yartzeit and date conversions etc), but for a look-back calendar to find the dates for a Torah-Portion www.hebcal.org is a little simpler. By the way, this portion is also read on Rosh Hashanah, but usually Bar-Mitzvah boys don’t do that as their Torah portion.