---
title: "Geodetic Equivalents"
method: POST
path: "/geodetic"
tags: ["Astro-Geography"]
---

# Geodetic Equivalents

`POST /geodetic`

Convert geographic coordinates to geodetic chart degrees (Sepharial method): each longitude maps to a zodiac degree on the Earth's surface.

## Request body

- Geodetic
  - `latitude` number, required
  - `longitude` number, required
  - `method` 'sepharial' | 'johndro'
  - `year` integer
  - `obliquity` number

## Response `200`

Successful calculation

- object
  - `ok` boolean
  - `data` object
    - `geodeticAscendant` number, nullable
    - `geodeticMC` number, nullable
    - `zodiacalLongitude` string, nullable

## Other responses

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

---

[API](https://skmtc.net/astroway/apis/astroway-calculation-api.md) · [All operations](https://skmtc.net/astroway/apis/astroway-calculation-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/astroway/astroway-calculation-api/revisions/529d7d36d7d6/schema)