get
A generic method for calculating the latest zman tfilah (time to recite the morning prayers) that is 4 * shaos zmaniyos (temporal hours) after the start of the day, calculated using the start and end of the day passed to this method. The time from the start of day to the end of day are divided into 12 shaos zmaniyos (temporal hours), and sof zman tfila is calculated as 4 of those shaos zmaniyos after the beginning of the day. As an example, passing sunrise and sunset or sea level sunrise and sea level sunset (depending on the isUseElevation elevation setting) to this method will return zman tfilah according to the opinion of the GRA.
Return
the Date of the latest zman tfilah based on the start and end of day times passed to this method. 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.
Parameters
the start of day for calculating zman tfilah. This can be sunrise or any alos passed to this method.
the end of day for calculating zman tfilah. This can be sunset or any tzais passed to this method.