Description Usage Arguments Details Value See Also Examples
Calculate solar time, the equation of time and solar declination
1  solar(tm)

tm 
a vector of POSIXct times. 
The solar time, the equation of time and the sine and cosine of
the solar declination are calculated for the times specified by
tm
using the same methods as
www.esrl.noaa.gov/gmd/grad/solcalc/.
A list containing the following vectors.

the solar time (degrees) 

the equation of time (minutes of time) 

sine of the solar declination 

cosine of the solar declination 
1 2 
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