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Solar Time Calculator

PROGRAMS LocalToSolarTime and SolarToLocalTime - These programs use the equations developed in this book to calculate the solar time (Eqn. 3.5) at a specified location, if you know the local (clock) time or local time if you know the solar time. In order to do this, you need to know whether or not it is daylight savings time, the local longitude, the day number (1 to 366) and your time zone. Time zones are specified as the number of hours east (+) or west (-) of Greenwich Mean Time zone. Examples are: Western Europe = + 1 hours, Greenwich Mean Time = 0 hours, Eastern Standard Time = - 5 hours, Central Standard Time = - 6 hours, Mountain Standard Time = - 7 hours and Pacific Standard Time is - 8 hours. In these programs, the simplified Equation of Time (Eqn. 3.2) is used.

You know the solar time and want to find the local time:

RUN PROGRAM  SolarToLocalTime

You know the local time and want to find the solar time:

RUN PROGRAM LocalToSolarTime