Return the B0 angle for the Sun at a specified time, which is the heliographic latitude of the of the center of the disk of the Sun as seen from Earth. The range of B0 is +/-7.23 degrees.

Equivalent definitions include:
  • The heliographic latitude of Earth

  • The tilt of the solar North rotational axis toward Earth


time (tuple, list, str, pandas.Timestamp, pandas.Series, pandas.DatetimeIndex, datetime.datetime, datetime.date, numpy.datetime64, numpy.ndarray, astropy.time.Time) – Time to use in a parse_time-compatible format


out (Latitude) – The position angle