Siual
Archimandrite Nikifor’s Biblical Encyclopedia
(Baruch 1:3)—the month Sivan, the third month of the Hebrew year, extending from the new moon of June to the new moon of July in the calendar described by the source. The encyclopedia treats the name as an old Persian word, perhaps connected with a pagan deity, and says that the Jews adopted it after the Babylonian captivity. See Sivan.