Rosh Chodesh Adar for Hebrew Year 5791 begins at sundown on and ends at nightfall on .
Start of month of Adar on the Hebrew calendar. Adar (אַדָר) is the 12th month of the Hebrew year, has 29 days, and corresponds to February or March on the Gregorian calendar. רֹאשׁ חוֹדֶשׁ, transliterated Rosh Chodesh or Rosh Hodesh, is a minor holiday that occurs at the beginning of every month in the Hebrew calendar. It is marked by the birth of a new moon.
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