mincha
This method returns the time of mincha gedola based on the calculation of Chacham Yosef Harari-Raful of Yeshivat Ateret Torah, that the day starts 1/10th of the day before sunrise and is usually calculated as ending 40 minutes after sunset (configurable to any offset via .setAteretTorahSunsetOffset). This is the preferred earliest time to pray mincha according to the opinion of the Rambam and others. For more information on this see the documentation on .getMinchaGedola. This is calculated as 6.5 solar hours after alos. The calculation used is 6.5 * shaahZmanisAteretTorah after alos.
Return
the Date of the time of mincha gedola. 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.