# Astronomy

Calculator name
| Summary |

Solar elevation angle (for a day)Solar elevation angle (for a day) |
Calculates a table of changes in the solar elevation and azimuth angles for a day and draws the chart. |

Solar elevation angle (for a year)Solar elevation angle (for a year) |
Calculates a table of changes in the solar elevation and azimuth angles for a year and draws the chart. |

Solar culmination and equation of timeSolar culmination and equation of time |
Calculates a table of changes in the solar culmination and equation of time for a year and draws the chart. |

Sunrise and sunset times (location)Sunrise and sunset times (location) |
Calculates the solar azimuth and elevation angles, sunrise and sunset times, and culmination time. |

Sunrise and sunset times (major cities)Sunrise and sunset times (major cities) |
Calculates the solar azimuth and elevation angles, sunrise and sunset times, and culmination time. |

Moonrise and moonset times (location)Moonrise and moonset times (location) |
Calculates the lunar azimuth and elevation angles, moonrise and moonset times, culmination time, and moon's age. |

Moonrise and moonset times (major cities)Moonrise and moonset times (major cities) |
Calculates the lunar azimuth and elevation angles, moonrise and moonset times, culmination time, and moon's age. |

Distance of planets from EarthDistance of planets from Earth |
Calculates the azimuth, elevation angle and distance of the planets from Earth. |

Planet's position on ecliptic and equatorial planesPlanet's position on ecliptic and equatorial planes |
Calculates the ecliptic longitude and latitude, right ascension, celestial declination, and distance of the planets from Earth. |

Rising and setting of the planets (location)Rising and setting of the planets (location) |
Calculates the rising and setting times, azimuth and elevation angles, and culmination time of the planets from the earth. |

Rising and setting of the planets (major cities)Rising and setting of the planets (major cities) |
Calculates the rising and setting times, azimuth and elevation angles, and culmination time of the planets. |

Tidal forceTidal force |
Calculate the gravitational and tidal forces of the moon and the sun, and their respective ratios of those at apogee to those at perigee. |

Escape velocityEscape velocity |
Calculates the escape velocities from the planet and from the solar system. |

Orbit of a satelliteOrbit of a satellite |
Calculates the orbital radius and period, and flight velocity from the orbital altitude. |

Western calendar date from Julian DayWestern calendar date from Julian Day |
Calculates Western calendar date from Julian Day or Modified Julian Day. |

Julian Day from Western calendar dateJulian Day from Western calendar date |
Calculates Julian Day and Modified Julian Day from Western calendar date. |