1,333. When the Arc of Visibility is Small

Hilchos Kiddush HaChodesh 17:14

Since the moon’s latitude is to the south and its actual location is between the start of Capricorn and that of Cancer, we add the moon’s circuit to the second longitude. This results in a  third longitude of 11 degrees, 28 minutes (11, 28). Since this longitude is in Taurus, we add one-fifth to the third longitude, which is 2 degrees, 18 minutes. This makes the fourth longitude 13 degrees, 46 minutes (13, 46). Now go back to the first latitude and take two-thirds of it. This makes the correction of the latitude 2 degrees, 35 minutes. Since the latitude is to the south, the correction is subtracted from the fourth longitude, which gives us an arc of visibility of 11 degrees, 11 minutes (11, 11).

This process can be used to calculate the degrees and minutes for any night of the moon's visibility that one might want to know, forever.

Hilchos Kiddush HaChodesh 17:15

Some things to be aware of regarding the arc of visibility: if the arc is nine degrees or smaller, it will be impossible for the moon to be visible anywhere in Israel; if the arc is greater than 14 degrees, it would be impossible for the moon not to be visible and conspicuous throughout Israel.