alos26Degrees
This method should be used lechumra only and returns alos (dawn) calculated when the sun is ZENITH_26_DEGREES below the eastern geometric horizon before sunrise. This calculation is based on the same calculation of 120 minutes but uses a degree-based calculation instead of 120 exact minutes. This calculation is based on the position of the sun 120 minutes before sunrise in Jerusalem around the equinox / equilux, which calculates to 26 below geometric zenith.
Since this time is extremely early, it should only be used lechumra only, such as not eating after this time on a fast day, and not as the start time for mitzvos that can only be performed during the day.
Return
the Date representing alos. If the calculation can't be computed such as northern and southern locations even south of the Arctic Circle and north of the Antarctic Circle where the sun may not reach low enough below the horizon for this calculation, a null will be returned. See detailed explanation on top of the AstronomicalCalendar documentation.