以珥月（希伯来语：אִיָּר ,אייר‎，和合本常译作“二月”，或称作“西弗月”）是希伯来历的一个月份，犹太教历二月、犹太国历八月，长为29天，对应格里历的4月至5月间。

• 14日：补过逾越节。

Iyar (Hebrew:אִייָר‎ or אִיָּר, Standard Iyyar Tiberian ʾIyyār ; from Akkadian ayyaru, meaning "Rosette; blossom") is the eighth month of the civil year (which starts on 1 Tishrei) and the second month of the ecclesiastical year (which starts on 1 Nisan) on the Hebrew calendar. The name is Babylonian in origin. It is a spring month of 29 days. Iyar usually falls in April–June on the Gregorian calendar.