sof
This method returns the latest zman krias shema (time to recite Shema in the morning). This time is 3 shaos zmaniyos (solar hours) after netz amiti (sunrise) based on the opinion of the Baal Hatanya that the day is calculated from sunrise to sunset. This returns the time 3 * shaahZmanisBaalHatanya after netz amiti (sunrise).
Return
the Date of the latest zman shema according to the Baal Hatanya. If the calculation can't be computed such as in the Arctic Circle where there is at least one day a year where the sun does not rise, and one where it does not set, a null will be returned. See detailed explanation on top of the AstronomicalCalendar documentation.