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Astrology charts, transits and eclipses from NASA JPL data, 13,200 BC to AD 17,191. Free, no key.

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eclipses Read-only

Solar and lunar eclipses between two dates (up to 20 years per call), with type, the exact moment of greatest eclipse and the eclipse degree. Works across the full 15,000-year span.

tostring, required

fromstring, required

Tools (10)

eclipses

Solar and lunar eclipses between two dates (up to 20 years per call), with type, the exact moment of greatest eclipse and the eclipse degree. Works across the full 15,000-year span.

read-only

Argument	Type	Description
to*	string
from*	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "from",
    "to"
  ],
  "properties": {
    "to": {
      "type": "string",
      "pattern": "^[+-]?\\d{4,5}-\\d{2}-\\d{2}$"
    },
    "from": {
      "type": "string",
      "pattern": "^[+-]?\\d{4,5}-\\d{2}-\\d{2}$"
    }
  }
}

naelos_library

Which national charts (198) and empire charts (19) Naelos holds, each researched and sourced, with the founding event it is cast for. The charts themselves, with their times, places and readings, are in Naelos's Mundane suite.

read-only

Argument	Type	Description
search	string	Filter by name, e.g. France

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "search": {
      "type": "string",
      "maxLength": 60,
      "description": "Filter by name, e.g. France"
    }
  }
}

natal_chart

A complete natal (birth) chart: every planet's sign, degree and house, the Ascendant and Midheaven, retrogrades, and the aspects between planets with exact orbs. Calculated from NASA JPL data by Naelos Ephemeris.

read-only

Argument	Type	Description
date*	string	Birth date, YYYY-MM-DD
time	string	Local clock time, HH:MM (24-hour). If unknown, omit: noon is used, and houses and angles are then unreliable.
place	string	Birthplace name, echoed back so the user can check the coordinates
latitude*	number	Birthplace latitude in decimal degrees (north positive)
timezone*	string	IANA time zone of the birthplace, e.g. America/New_York. Historical daylight saving is applied from it.
longitude*	number	Birthplace longitude in decimal degrees (east positive)
house_system	string	House system (default placidus)

Input schema (JSON)

planet_position

One body's tropical position on a date, anywhere from 13,200 BC to AD 17,191, with its speed and whether it is retrograde. For historical and ancient dates; dates before 1582 are proleptic Gregorian.

read-only

Argument	Type	Description
body*	string
date*	string
time_utc	string	HH:MM UTC (default 12:00)

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "body",
    "date"
  ],
  "properties": {
    "body": {
      "enum": [
        "sun",
        "moon",
        "mercury",
        "venus",
        "mars",
        "jupiter",
        "saturn",
        "uranus",
        "neptune",
        "pluto",
        "true_node",
        "chiron"
      ],
      "type": "string"
    },
    "date": {
      "type": "string",
      "pattern": "^[+-]?\\d{4,5}-\\d{2}-\\d{2}$"
    },
    "time_utc": {
      "type": "string",
      "pattern": "^\\d{2}:\\d{2}$",
      "description": "HH:MM UTC (default 12:00)"
    }
  }
}

progressions

The progressed chart as of today: secondary progressions (a day after birth for each year of life) or solar arc directions (every point moved by the Sun's progressed arc).

read-only

Argument	Type	Description
date*	string	Birth date, YYYY-MM-DD
time	string	Local clock time, HH:MM (24-hour). If unknown, omit: noon is used, and houses and angles are then unreliable.
place	string	Birthplace name, echoed back so the user can check the coordinates
method	string	Default secondary
latitude*	number	Birthplace latitude in decimal degrees (north positive)
timezone*	string	IANA time zone of the birthplace, e.g. America/New_York. Historical daylight saving is applied from it.
longitude*	number	Birthplace longitude in decimal degrees (east positive)

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "date",
    "latitude",
    "longitude",
    "timezone"
  ],
  "properties": {
    "date": {
      "type": "string",
      "pattern": "^[+-]?\\d{4,5}-\\d{2}-\\d{2}$",
      "description": "Birth date, YYYY-MM-DD"
    },
    "time": {
      "type": "string",
      "pattern": "^\\d{2}:\\d{2}$",
      "description": "Local clock time, HH:MM (24-hour). If unknown, omit: noon is used, and houses and angles are then unreliable."
    },
    "place": {
      "type": "string",
      "maxLength": 120,
      "description": "Birthplace name, echoed back so the user can check the coordinates"
    },
    "method": {
      "enum": [
        "secondary",
        "solar_arc"
      ],
      "type": "string",
      "description": "Default secondary"
    },
    "latitude": {
      "type": "number",
      "maximum": 90,
      "minimum": -90,
      "description": "Birthplace latitude in decimal degrees (north positive)"
    },
    "timezone": {
      "type": "string",
      "description": "IANA time zone of the birthplace, e.g. America/New_York. Historical daylight saving is applied from it."
    },
    "longitude": {
      "type": "number",
      "maximum": 180,
      "minimum": -180,
      "description": "Birthplace longitude in decimal degrees (east positive)"
    }
  }
}

returns

The solar return for a year (the moment the Sun returns to its birth position, the chart for that year) or the lunar return nearest now, cast for the birthplace or another location.

read-only

Argument	Type	Description
date*	string	Birth date, YYYY-MM-DD
kind*	string
time	string	Local clock time, HH:MM (24-hour). If unknown, omit: noon is used, and houses and angles are then unreliable.
year	integer	Solar return year (default this year)
place	string	Birthplace name, echoed back so the user can check the coordinates
latitude*	number	Birthplace latitude in decimal degrees (north positive)
timezone*	string	IANA time zone of the birthplace, e.g. America/New_York. Historical daylight saving is applied from it.
longitude*	number	Birthplace longitude in decimal degrees (east positive)

sky_now

Where every planet is at a moment (now by default): sign, degree, retrograde, and the aspects between them. Give a place to add houses and angles. Works for any date from 13,200 BC to AD 17,191.

read-only

Argument	Type	Description
latitude	number
longitude	number
datetime_utc	string	The moment in UTC, YYYY-MM-DDTHH:MM (default now)

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "latitude": {
      "type": "number",
      "maximum": 90,
      "minimum": -90
    },
    "longitude": {
      "type": "number",
      "maximum": 180,
      "minimum": -180
    },
    "datetime_utc": {
      "type": "string",
      "pattern": "^[+-]?\\d{4,5}-\\d{2}-\\d{2}T\\d{2}:\\d{2}",
      "description": "The moment in UTC, YYYY-MM-DDTHH:MM (default now)"
    }
  }
}

synastry

The aspects between two people's birth charts (each one's planets to the other's), with exact orbs and strength.

read-only

Argument	Type	Description
person_a*	object	First person's birth data
person_b*	object	Second person's birth data

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "person_a",
    "person_b"
  ],
  "properties": {
    "person_a": {
      "type": "object",
      "required": [
        "date",
        "latitude",
        "longitude",
        "timezone"
      ],
      "properties": {
        "date": {
          "type": "string",
          "pattern": "^[+-]?\\d{4,5}-\\d{2}-\\d{2}$",
          "description": "Birth date, YYYY-MM-DD"
        },
        "time": {
          "type": "string",
          "pattern": "^\\d{2}:\\d{2}$",
          "description": "Local clock time, HH:MM (24-hour). If unknown, omit: noon is used, and houses and angles are then unreliable."
        },
        "place": {
          "type": "string",
          "maxLength": 120,
          "description": "Birthplace name, echoed back so the user can check the coordinates"
        },
        "latitude": {
          "type": "number",
          "maximum": 90,
          "minimum": -90,
          "description": "Birthplace latitude in decimal degrees (north positive)"
        },
        "timezone": {
          "type": "string",
          "description": "IANA time zone of the birthplace, e.g. America/New_York. Historical daylight saving is applied from it."
        },
        "longitude": {
          "type": "number",
          "maximum": 180,
          "minimum": -180,
          "description": "Birthplace longitude in decimal degrees (east positive)"
        }
      },
      "description": "First person's birth data"
    },
    "person_b": {
      "type": "object",
      "required": [
        "date",
        "latitude",
        "longitude",
        "timezone"
      ],
      "properties": {
        "date": {
          "type": "string",
          "pattern": "^[+-]?\\d{4,5}-\\d{2}-\\d{2}$",
          "description": "Birth date, YYYY-MM-DD"
        },
        "time": {
          "type": "string",
          "pattern": "^\\d{2}:\\d{2}$",
          "description": "Local clock time, HH:MM (24-hour). If unknown, omit: noon is used, and houses and angles are then unreliable."
        },
        "place": {
          "type": "string",
          "maxLength": 120,
          "description": "Birthplace name, echoed back so the user can check the coordinates"
        },
        "latitude": {
          "type": "number",
          "maximum": 90,
          "minimum": -90,
          "description": "Birthplace latitude in decimal degrees (north positive)"
        },
        "timezone": {
          "type": "string",
          "description": "IANA time zone of the birthplace, e.g. America/New_York. Historical daylight saving is applied from it."
        },
        "longitude": {
          "type": "number",
          "maximum": 180,
          "minimum": -180,
          "description": "Birthplace longitude in decimal degrees (east positive)"
        }
      },
      "description": "Second person's birth data"
    }
  }
}

timing_events

Between two dates: planets changing sign, new and full Moons (and quarters), and retrograde and direct stations, each with its exact moment in UTC. At most two years per call.

read-only

Argument	Type	Description
to*	string
from*	string
kinds	array	Default all three

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "from",
    "to"
  ],
  "properties": {
    "to": {
      "type": "string",
      "pattern": "^[+-]?\\d{4,5}-\\d{2}-\\d{2}$"
    },
    "from": {
      "type": "string",
      "pattern": "^[+-]?\\d{4,5}-\\d{2}-\\d{2}$"
    },
    "kinds": {
      "type": "array",
      "items": {
        "enum": [
          "ingresses",
          "lunations",
          "stations"
        ],
        "type": "string"
      },
      "description": "Default all three"
    }
  }
}

transits

Every exact transit of the planets (Sun to Pluto; the Moon is left out as it aspects everything monthly) to a birth chart's planets, Ascendant and Midheaven over a span, with the exact date of each and whether the planet is retrograde. Major aspects: conjunction, sextile, square, trine, opposition.

read-only

Argument	Type	Description
date*	string	Birth date, YYYY-MM-DD
days	integer	Length of the span in days (default 30, at most 366)
from	string	Start date (default today)
time	string	Local clock time, HH:MM (24-hour). If unknown, omit: noon is used, and houses and angles are then unreliable.
place	string	Birthplace name, echoed back so the user can check the coordinates
latitude*	number	Birthplace latitude in decimal degrees (north positive)
timezone*	string	IANA time zone of the birthplace, e.g. America/New_York. Historical daylight saving is applied from it.
longitude*