Permalink Submitted by Bo on Sun, 03/17/2019 - 11:47am
Great article. Check this out:
"How does one know which lunar month includes the first day of spring? In the Talmud (Sanhedrin 13b), Rabbi Samuel, the son of Rabbi Isaac, states that the first day of spring should occur in the lunar month while the moon is still waxing. The moon grows from new to full in the first 14.5 days of the month. If a Rosh Chodesh (new moon) occurs at any time between the sixth and the 20th March, then on the 21st March the moon will still be waxing and that month is designated as Aviv. If this is not the case, the next lunar month is chosen. The earliest date Pesach can occur is March 21, and the latest it should occur is April 20."
Other confirmation
Great article. Check this out:
"How does one know which lunar month includes the first day of spring? In the Talmud (Sanhedrin 13b), Rabbi Samuel, the son of Rabbi Isaac, states that the first day of spring should occur in the lunar month while the moon is still waxing. The moon grows from new to full in the first 14.5 days of the month. If a Rosh Chodesh (new moon) occurs at any time between the sixth and the 20th March, then on the 21st March the moon will still be waxing and that month is designated as Aviv. If this is not the case, the next lunar month is chosen. The earliest date Pesach can occur is March 21, and the latest it should occur is April 20."
http://www.avoiceinthewilderness.org/saccal/passlate.html