** Name ** | | **Since ** | | **Description ** |

** at_add_magnitudes ** | | v0.0.3 | | Add magnitudes and compute the total magnitude |

** at_arcsec2deg_rad ** | | v0.0.1 | | Convert an angle expressed in arcseconds to degrees and radians |

** at_azimuth2winddir ** | | v0.0.3 | | Convert azimuth to wind direction |

** at_cal2gps ** | | v0.0.2 | | Convert calendar date/time to GPS time |

** at_cal2jd ** | | v0.0.1 | | Compute the Julian day for a given calendar date |

** at_cal2times ** | | v0.0.2 | | Convert calendar date/time from the system clock or command line to a number of time formats |

** at_cal2unix ** | | v0.0.2 | | Convert calendar date/time to Unix time stamp |

** at_comet_eq2ap ** | | v0.0.1 | | Calculate the semi-major axis *a* and orbital period *P* of a comet from its eccentricity *e* and perihelion distance *q* |

** at_dd2dms_rad ** | | v0.0.1 | | Convert an angle expressed in decimal degrees to degrees and arcminutes, degrees, arcminutes and arcseconds, and radians |

** at_distance_in_sky_ecl ** | | v0.0.3 | | Calculate the angular distance between two positions on a stellar globe, in ecliptic, galactic, etc. coordinates |

** at_distance_in_sky_eq ** | | v0.0.3 | | Calculate the angular distance between two positions on a stellar globe, in equatorial coordinates |

** at_dms2dd_rad ** | | v0.0.1 | | Convert an angle expressed in degrees, arcminutes and arcseconds to decimal degrees and radians |

** at_eq2hor ** | | v0.0.2 | | Convert equatorial coordinates (RA, dec) to horizontal (az,alt) |

** at_gps2cal ** | | v0.0.2 | | Convert GPS time to calendar date and time |

** at_jd2cal ** | | v0.0.1 | | Compute the calendar date, time and GMST for a given Julian day |

** at_jd2times ** | | v0.0.2 | | Convert a Julian day to a number of time formats |

** at_planetdata ** | | v0.0.3 | | Compute rise/set times, planet data and a planet distance matrix for a given location and date |

** at_rad2dd_dms ** | | v0.0.1 | | Convert an angle expressed in radians to decimal degrees, degrees and arcminutes, and degrees, arcminutes and arcseconds |

** at_rect2spher ** | | v0.0.1 | | Convert rectangular coordinates to spherical coordinates |

** at_settings ** | | v0.0.3 | | Print the current settings and optionally create a new settings file |

** at_time2hms ** | | v0.0.3 | | Convert a time in hours to hours and minutes, and hours, minutes and seconds |

** at_unix2cal ** | | v0.0.2 | | Convert Unix time stamp to calendar |