Have you ever wondered why you need to wait to bless the moon? How the calendar calculates from one molad to the next? Why the visibility of the moon changes from quarter to quarter?
Rabbi Yosef Yitzchok Losh takes us inside this technical matter with the use of diagrams, models, and calculations. The lecture presumes a geocentric model of the solar system and some familiarity with Hebrew terms. You may find the following lexicon helpful:
