---
title: "Planetary Return"
method: POST
path: "/planetary-return"
tags: ["Prognostics"]
---

# Planetary Return

`POST /planetary-return`

Find all returns of any planet to its natal longitude within a given year. Returns full charts for each return.

## Request body

- PlanetaryReturn — Birth data for a single natal chart. Required: date (YYYY-MM-DD), time (HH:mm:ss). Coordinates are latitude and longitude in decimal degrees, plus timezoneOffset in hours from UTC; the short forms lat, lon, lng and tz are rejected with 400 INVALID_FIELD. Omitting the coordinates is not the same as skipping them: houses, angles and everything derived from them are then computed for 0°N 0°E at UTC, which is a wrong answer rather than a neutral default.
  - `date` string, required
  - `time` string, required
  - `timezoneOffset` number, nullable
  - `latitude` number, nullable
  - `longitude` number, nullable
  - `houseSystem` string
  - `name` string
  - `city` string
  - `zodiacType` 'tropical' | 'sidereal'
  - `ayanamsaId` number, nullable
  - `cosmogram` boolean
  - `planetId` number, nullable, required
  - `year` number, nullable, required
  - `locationLat` number, nullable
  - `locationLng` number, nullable

## Response `200`

Successful calculation

- object
  - `ok` boolean
  - `data` object
    - `returns` object[], nullable
      - `returnDate` string, nullable
      - `returnTime` string, nullable
      - `returnJd` number, nullable
      - `chart` object, nullable
        - `planets` unknown[], nullable
          - unknown
        - `houses` object, nullable
          - `ascendant` number, nullable
          - `cusps` unknown[], nullable
            - unknown

## Other responses

- `400` — Validation error
- `401` — Missing or invalid API key

---

[API](https://skmtc.dev/astroway/apis/astroway-calculation-api.md) · [All operations](https://skmtc.dev/astroway/apis/astroway-calculation-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/astroway/astroway-calculation-api/revisions/793e5c2dbcdf/schema)