isBeHaB

The Monday, Thursday and Monday after the first Shabbos after Rosh Chodesh Cheshvan and Iyar are BeHaB days. If the last Monday of Iyar's BeHaB coincides with PESACH_SHENI, the method currently considers it both Pesach Sheni and BeHaB. As seen in an Ohr Sameach article on the subject The unknown Days: BeHaB Vs. Pesach Sheini? there are some customs that delay the day to various points in the future.