pvlib.solarposition.hour_angle

pvlib.solarposition.hour_angle(times, longitude, equation_of_time)[source]

Hour angle in local solar time. Zero at local solar noon.

Parameters:
  • times (pandas.DatetimeIndex) – Corresponding timestamps, must be localized to the timezone for the longitude.
  • longitude (numeric) – Longitude in degrees
  • equation_of_time (numeric) – Equation of time in minutes.
Returns:

hour_angle (numeric) – Hour angle in local solar time in degrees.

References

[1]J. A. Duffie and W. A. Beckman, “Solar Engineering of Thermal Processes, 3rd Edition” pp. 13, J. Wiley and Sons, New York (2006)
[2]J. H. Seinfeld and S. N. Pandis, “Atmospheric Chemistry and Physics” p. 132, J. Wiley (1998)
[3]Daryl R. Myers, “Solar Radiation: Practical Modeling for Renewable Energy Applications”, p. 5 CRC Press (2013)