sof
This method returns the latest zman tfila (time to recite the morning prayers) calculated as 2 hours before ZmanimCalendar.getChatzos. This is based on the opinions that calculate sof zman krias shema as sofZmanShma3HoursBeforeChatzos. This returns the time of 2 hours before ZmanimCalendar.getChatzos.
Return
the Date of the latest zman krias shema. 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.
See also
Zmanim