---
title: "24 Solar Terms (節氣)"
method: POST
path: "/chinese/solar-terms"
tags: ["Chinese: Zodiac & Feng Shui"]
---

# 24 Solar Terms (節氣)

`POST /chinese/solar-terms`

The 24 solar terms of a Chinese solar year as exact instants, in UTC and Beijing time. Twelve of them open a BaZi pillar month; the other twelve decide where a leap month falls.

## Request body

- ChineseSolarTermsInput
  - `year` integer, required

## Response `200`

Successful calculation

- object
  - `ok` boolean
  - `data` object
    - `year` number, nullable
    - `terms` object[], nullable
      - `index` number, nullable
      - `chinese` string, nullable
      - `pinyin` string, nullable
      - `english` string, nullable
      - `sunLongitude` number, nullable
      - `utc` string, nullable
      - `beijing` string, nullable
      - `opensPillarMonth` boolean, nullable
    - `notes` string[], nullable

## Other responses

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

## Changes

- **2026-08-24** `8ab5a768b521` — 1 info
  - added the optional property `data/notes` to the response with the `200` status
- **2026-08-22** `5a17388652f3` — 1 breaking
  - added the new required request property `year`
- **2026-08-14** `994755209cea` — 2 info
  - api tag `Chinese: Zodiac & Feng Shui` added
  - api tag `Chinese — Zodiac & Feng Shui` removed

[Change history](https://skmtc.dev/astroway/apis/astroway-calculation-api/changes/chinese/solar-terms/post.md)

---

[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/8ab5a768b521/schema)