Old Testament Hebrew Lexical Dictionary
Strong's #144 - אֲדָר
Adar = “glorious”
1) twelfth month, corresponding to modern March or April
אֲדָר the twelfth of the Hebrew months, from the new moon of March, to that of April (according to the Rabbins, from the new moon of February, to that of March); Esther 3:7, 13 8:12 9:1, 15, 17, 19, 21. Greek Ἀδάρ, 1Ma_7:43 Syriac ܙܳܕܰܪ; Arab. أَدَارُ, أَذَارُ and آداَرُ, the sixth of the Syro-Macedonian months. The etymology is uncertain. Perhaps this month is so called from the flowers and trees being so splendidly covered with leaves. [In add. this suggested derivation is omitted, and instead “perhaps from Pers. آذر fire.”]
אֲדָר Ch. id. Ezra 6:15.
the Sixth Week after Easter