Solar culmination and equation of time Calculator

Calculates a table of changes in the solar culmination and equation of time for a year and draws the chart.

Input negative degree for west longtitude.
Daylight Saving time is not taken into consideration.
Solar culmination and equation of time
    1. ,
    2. [ Calculation interval
    3. ]
    1. ,
    2. Time zone
    3. h
    4. (9:Japan)

・The factors which equation of time produces are the Earth's orbital eccentricity and axial tilt.
・equation of time = mean solar time − apparent solar time
     =(time zone - longitude/15)+12h− solar culmination
・If the longitude of the standard time is specified, the mean solar time will become noon.

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