Bo 12:02 – First Mitzva: Kiddush Hachodesh (Yeshiva 5780)

Yeshiva 5780 Kidush Chadashim and Ibbur Shanim.
A short version of the first Mitzvah.
Our calendar is hidden even from the Torah SheBaal Peh (Gemara) only the RaMbaM recorded it.
The nature of our calendar and the reason for its mystery.
The combination of the Solar (normal constant) and the Lunar (variable) calendars, we join the constant and the changing together.
The RaSaG’s radical view of קידוש החדש על פי הראי’ה the sighting of the moon.