ירחים, sometimes also called חדשים, _new moons_, from the circumstance of their commencing with the new moon, anciently had no separate names, with the exception of the first, which was called _Abib_, that is, the month of the young ears of corn,” Exod. xiii, 4; xxiii, 15; xxxiv, 18; Deut. xvi, 1. During the captivity, the Hebrews adopted the Babylonian names for their months; which were as follows, and they were reckoned thus:--

ניסן, _Nisan_, from the new of April, Neh. ii, 1. moon

זיו, _Zif_ or _Ziv_, also of May, 1 Kings vi, 1. called אייר,

סִיוָן, _Sivan_, of June, Esther viii, 9.

תמוז, _Tammuz_, of July.

אב, _Ab_, of August.

אלול, _Elul_, of September, Neh. vi, 15.

תשרי, _Tishri_, also ירח of October, 1 Kings viii, 2. האתנים,

בול, _Bul_, also מרחשון, of November, 1 Kings vi, 38.

כסלו, _Kislev_, of December, Neh. i, 1.

טבת, _Tebeth_, of January, Esther ii, 16.

שבט, _Shebat_, of February, Zech. i, 7.

אדר, _Adar_, of March, Esther iii, 7. The first month here mentioned, _Nisan_, was originally called _Abib_. The intercalary month is denominated in Hebrew אדר.