---
title: "Lunar Calendar"
method: POST
path: "/lunar-calendar"
tags: ["Calendar & Cycles"]
---

# Lunar Calendar

`POST /lunar-calendar`

Calculate a lunar calendar for a given month: Moon sign per day, lunar phases, void-of-course windows, and perigee/apogee.

## Request body

- LunarCalendar
  - `year` number, nullable, required
  - `month` number, nullable, required

## Response `200`

Successful calculation

- object
  - `ok` boolean
  - `data` object
    - `year` number, nullable
    - `month` number, nullable
    - `phases` object[], nullable
      - `type` string, nullable
      - `jd` number, nullable
      - `date` string, nullable
      - `longitude` number, nullable
    - `ingresses` object[], nullable
      - `jd` number, nullable
      - `date` string, nullable
      - `signIndex` number, nullable
      - `longitude` number, nullable
    - `voidPeriods` object[], nullable
      - `startJd` number, nullable
      - `startDate` string, nullable
      - `endJd` number, nullable
      - `endDate` string, nullable
      - `nextSignIndex` number, nullable
      - `durationHours` number, nullable
      - `lastAspect` object, nullable
        - `planetId` number, nullable
        - `aspectName` string, nullable
        - `aspectSymbol` string, nullable
    - `moonAspects` object[], nullable
      - `jd` number, nullable
      - `date` string, nullable
      - `planetId` number, nullable
      - `aspect` object, nullable
        - `name` string, nullable
        - `i18nKey` string, nullable
        - `angle` number, nullable
        - `orb` number, nullable
        - `symbol` string, nullable
        - `isMajor` boolean, nullable
        - `color` string, nullable
      - `moonLongitude` number, nullable
    - `dailyInfo` object[], nullable
      - `date` string, nullable
      - `lunarDay` number, nullable
      - `lunarDayStart` string, nullable
      - `lunarDayEnd` string, nullable
      - `moonSignIndex` number, nullable
      - `moonLongitude` number, nullable
      - `isVoC` boolean, nullable
      - `phase` unknown
      - `ingress` object, nullable
        - `jd` number, nullable
        - `date` string, nullable
        - `signIndex` number, nullable
        - `longitude` number, 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/8ab5a768b521/schema)