---
title: "Planet of the Day (public, no key)"
method: GET
path: "/public/planet-of-day"
tags: ["Public"]
---

# Planet of the Day (public, no key)

`GET /public/planet-of-day`

Traditional (Chaldean) planetary ruler of the weekday: Sun=Sunday, Moon=Monday, …, Saturn=Saturday. Deterministic, no AI. `_footer` watermark. `localized` carries `planet` and `weekday` in the requested language; `themes` is an open set and stays English.

## Query parameters

- `date` string, date
- `lang` string

## Headers

- `Accept-Language` string

## Response `200`

OK

- object
  - `ok` boolean
  - `data` object
    - `date` string, nullable
    - `weekday` string, nullable
    - `planet` string, nullable
    - `glyph` string, nullable
    - `themes` string[], nullable
    - `localized` object, nullable
      - `planet` string, nullable
      - `weekday` string, nullable
  - `_footer` string — Free-tier watermark, present on every public response. Keys on a paid plan do not receive it.

## Other responses

- `400` — Invalid sign or date

---

[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)