1,323. The Angle for Courses from 90 to 270 Degrees

Rabbi Jack Abramowitz

Hilchos Kiddush HaChodesh 16:13

We now know the angle for the course of the latitude all the way up to 90 degrees (listed in halacha 16:11). With this information, one will be able to calculate the angle no matter what the size of the course may be. When the course is between 90 and 180 degrees, subtract it from 180 and calculate the angle for the result.

Hilchos Kiddush HaChodesh 16:14

Similarly, when the course of the latitude is between 180 and 270 degrees, subtract 180 from the course and calculate the angle for the result.