It is this Metonic calendar which mainstream [ the Qumran community seems to have used a solar calendar 2 ] Judaism adopted, probably in the fourth century A.D. 3 There are twelve (Babylonian) named months 4 in the Jewish year, with day lengths of either 29 or 30 to approximate the 29.5 day cycle of the moon.
(the Qumran community; to have used; which mainstream [ the Qumran community seems to have used a solar calendar 2 ] Judaism adopted) (a solar calendar; adopted; Judaism)
the Qumran community a solar calendar
to have used adopted
which mainstream [ the Qumran community seems to have used a solar calendar 2 ] Judaism adopted
Judaism