Transits

Calculate planetary transits and their aspects to a natal chart over a specified time period.

Calculate Transits

Calculate transits for a date range:

curl -X POST "https://api.astroapi.cloud/api/calc/transit" \
  -H "X-Api-Key: your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "birthDate": "1990-06-15T14:30",
    "birthLocation": {
      "latitude": 51.5074,
      "longitude": -0.1278,
      "timezone": "Europe/London"
    },
    "transitDateStart": "2024-01-01T00:00",
    "transitDateEnd": "2024-01-31T23:59",
    "transitLocation": {
      "latitude": 51.5074,
      "longitude": -0.1278,
      "timezone": "Europe/London"
    }
  }'

Parameters

Parameter	Type	Required	Description
birthDate	string	Yes	Birth date/time in YYYY-MM-DDTHH:mm format
birthLocation	object	Yes	Birth location with latitude, longitude, and timezone
transitDateStart	string	Yes	Transit period start in YYYY-MM-DDTHH:mm format
transitDateEnd	string	Yes	Transit period end in YYYY-MM-DDTHH:mm format
transitLocation	object	Yes	Transit location with latitude, longitude, and timezone
houseSystem	string	No	House system (default: "placidus")
points	array	No	Celestial points to calculate
orbs	object	No	Custom orb values per aspect type
language	string	No	Language code for text content (default: "en")
includeText	boolean	No	Include interpretation text (default: false)
includeReadableEntities	boolean	No	Include human-readable entity titles (default: false)

Location Object

{
  "latitude": 51.5074,
  "longitude": -0.1278,
  "timezone": "Europe/London"
}

Response

The response includes transit crossings (when planets enter/exit signs or houses), transit house positions, aspects between transit and natal planets, and chart URLs.

{
  "data": {
    "crossings": [...],
    "transitHouses": [...],
    "aspects": [
      {
        "point1": "saturn",
        "point2": "sun",
        "aspect": "conjunction",
        "orb": 1.2,
        "applying": true
      }
    ],
    "charts": {
      "transit": {
        "title": "Transit Chart (Bi-wheel)",
        "url": "..."
      },
      "natal": {
        "title": "Natal Chart",
        "url": "..."
      }
    },
    "natalPoints": [...],
    "natalHouses": [...],
    "transitPoints": [...]
  }
}

Custom Orbs

Specify custom orb values for different aspect types:

curl -X POST "https://api.astroapi.cloud/api/calc/transit" \
  -H "X-Api-Key: your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "birthDate": "1990-06-15T14:30",
    "birthLocation": {
      "latitude": 51.5074,
      "longitude": -0.1278,
      "timezone": "Europe/London"
    },
    "transitDateStart": "2024-01-01T00:00",
    "transitDateEnd": "2024-01-31T23:59",
    "transitLocation": {
      "latitude": 51.5074,
      "longitude": -0.1278,
      "timezone": "Europe/London"
    },
    "orbs": {
      "conjunction": 3,
      "opposition": 3,
      "trine": 2,
      "square": 2
    }
  }'

With Interpretation Text

Include interpretation text with your transit calculations:

curl -X POST "https://api.astroapi.cloud/api/calc/transit" \
  -H "X-Api-Key: your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "birthDate": "1990-06-15T14:30",
    "birthLocation": {
      "latitude": 51.5074,
      "longitude": -0.1278,
      "timezone": "Europe/London"
    },
    "transitDateStart": "2024-01-15T00:00",
    "transitDateEnd": "2024-01-15T23:59",
    "transitLocation": {
      "latitude": 51.5074,
      "longitude": -0.1278,
      "timezone": "Europe/London"
    },
    "includeText": true,
    "language": "en"
  }'