An overview of time classes

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Time classes are used to specify the time configuration for calculating solar radiation. There are four types of time classes to specify a period of time within a single day, for multiple days in a year, for special days (solstice and equinox), and for a whole year.


Defines a multiple day time period within a given year to perform solar calculations. A year, start day, and end day are specified.


Defines the summer solstice/equinox/winter solstice days as the time period to perform solar calculations.


Defines a year, using monthly intervals, to perform solar calculations.


Defines a time period within one day to perform solar calculations. A Julian Day, start time, and end time are specified.

Tools that use time objects

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