Rosh Chodesh Iyyar (ראש חודש אייר) begins at sundown April 23 (7:56 PM EDT)

Rosh Chodesh Sivan (ראש חודש סיון) begins at sundown May 23 (8:14 PM EDT)

Rosh Chodesh Tamuz (ראש חודש תמוז) begins at sundown June 21 (8:26 PM EDT)

Rosh Chodesh Av (ראש חודש אב) begins at sundown July 21 (8:22 PM EDT)

Rosh Chodesh Elul (ראש חודש אלול) begins at sundown Aug 19 (8:00 PM EDT)

Rosh Chodesh Cheshvan 5781 (ראש חודש חשון) begins at sundown Oct 17 (6:53 PM EDT)

Rosh Chodesh Kislev (ראש חודש כסלו) begins at sundown Nov 16 (5:31 PM EST)

Rosh Chodesh Tevet (ראש חודש טבת) begins at sundown Dec 15 (5:31 PM EST)

Rosh Chodesh Sh'vat (ראש חודש שבט) begins at sundown Jan 13 (5:49 PM EST)

Rosh Chodesh Adar (ראש חודש אדר) begins at sundown Feb 11 (6:13 PM EST)