Inicio del mes de Iyyar en el calendario hebreo. אִיָיר (transliterated Iyyar or Iyar) is the 2° month of the Hebrew year, has 29 days, and corresponds to April or May on the Gregorian calendar. רֹאשׁ חוֹדֶשׁ, transliterated Rosh Jodesh 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

https://www.hebcal.com/holidays/rosh-chodesh-iyyar-2021?utm_source=js&utm_medium=icalendar