get
A utility methos to calculate zmanim based on Rav Moshe Feinstein as calculated in MTJ, Yeshiva of Staten Island, and Camp Yeshiva of Staten Island. The day is split in two, from alos / sunrise to fixed local chatzos, and the second half of the day, from fixed local chatzos to sunset / tzais. Morning based times are calculated based on the first 6 hours, and afternoon times based on the second half of the day.
Return
the Date of the later of .getMinchaGedolaBaalHatanya and .getMinchaGedola30Minutes. 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 the half day. This would be alos or sunrise for morning based times and fixed local chatzos for the second half of the day.
The end of the half day. This would be fixed local chatzos for morning based times and sunset or tzais for afternoon based times.
the number of hours to offset the beginning of the first or second half of the day