Cancel exits the menu. Lat shows the current Latitude value used for calculations. Positive values are North of the Equator, Negative values are South. Lon shows the current Longitude value used for calculations. Positive values are West of Greenwich, Negative values are East.
Negative values are West of Greenwich.
Loc pulls up the menu displayed below. Cancel exits the menu. Rise sets SunFN to calculate Rise and Set times. Civil calculate start and end of Civil Twilight. Naut calculate start and end of Nautical Twilight.