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Lilambd Solar Terms Calendar API
x402
Lilambd Solar Terms Calendar API is a paid API for AI agents from api.lilambd.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-11-04).
Returns a paginated list of Chinese solar term dates (24 seasonal divisions) with UTC timestamps, English names, and term numbers for a given year or range
Price / call$0.005
Success—
StatusUnknown
How this service works
A crossing for play, feeling, language, science and computation — creating states that do not have names yet.
Output
A JSON object containing an array of solar term entries, each with a UTC datetime string, year integer, English name (e.g. 'Xiaohan'), and term number (1-24), plus a total count, pagination limit/offset, and a Unicode CLDR 49 attribution string.
Example use cases
Seasonal content calendar planning
“I'm planning a newsletter for 2026 — can you get me all the Chinese solar term dates for that year so I can schedule content around each one?”
Next upcoming solar term lookup
“What's the next Chinese solar term coming up after today, January 20 2026, and when exactly does it start in UTC?”
Traditional calendar app data
“I'm building a calendar app and need the first 10 solar terms of 2026 — can you fetch their names, term numbers, and UTC timestamps?”
Technical details
Endpoint
GEThttps://api.lilambd.com/calendars/solar-terms?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need authoritative, paginated solar term date data sourced from Unicode CLDR 49 for calendar apps, scheduling tools, or cultural content platforms. Prefer this over manual calculation or general astronomy APIs when you specifically need named Chinese solar terms (jieqi) with English labels and precise UTC timestamps.
Side effects
- Invalid or out-of-range year parameter returns an error or empty result set
- Exceeding rate limits or quota may result in 402 payment required errors
- Malformed query parameters may return a 400 bad request
- Network timeout if the service is temporarily unavailable
- Empty data array if no solar terms fall within the queried range
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string | |
| additionalProperties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"data": [
{
"utc": "2026-01-05T08:23:02Z",
"year": 2026,
"name_en": "Xiaohan",
"term_no": 19
}
],
"count": 1,
"limit": 20,
"offset": 0,
"attribution": "Unicode CLDR 49 ..."
}
}Tags
x402
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