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Lilambd Calendar Converter — Non-Gregorian to Gregorian
x402
Lilambd Calendar Converter — Non-Gregorian to Gregorian 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).
Converts a date from a non-Gregorian calendar system (e.g. Ethiopic) into its Gregorian equivalent, returning the Julian Day Number and formatted Gregorian date.
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
Returns a JSON object with the original input date, the named calendar system, the computed Gregorian date string, and the Julian Day Number (JDN) — plus an attribution field. Example: {jdn: 2461295, input: '2019-01-01', calendar: 'ethiopic', gregorian: '2026-09-11'}.
Example use cases
Ethiopian date to Gregorian for scheduling
“I have a document that lists an event date as 2019-01-01 in the Ethiopic calendar — what is that in the standard Gregorian calendar?”
Historical chronology research
“Can you convert the Ethiopic date 2015-09-11 to its Gregorian equivalent and tell me the Julian Day Number so I can cross-reference it with other historical records?”
Localization for multi-calendar app
“My app displays dates in the Ethiopic calendar. Can you convert 2020-04-23 (Ethiopic) to Gregorian so I can store it in a standardized format in my database?”
Technical details
Endpoint
GEThttps://api.lilambd.com/calendars/to-gregorian?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to convert a date from a specific non-Gregorian calendar system (such as Ethiopic, Julian, Hebrew, or Islamic) into the standard Gregorian calendar, especially when you also need the Julian Day Number for precise chronological calculations. Prefer this over manual lookup tables or general-purpose date libraries when you want a simple API call with reliable output for cultural or historical calendar systems.
Side effects
- Invalid or unrecognized calendar name returns an error or empty result
- Malformed date string (wrong format or out-of-range) may return an error
- Unsupported calendar systems not implemented by the API will fail
- Missing required query parameters result in a bad request error
- Network or payment (x402) failures prevent the response from being returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string | |
| additionalProperties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"jdn": 2461295,
"input": "2019-01-01",
"calendar": "ethiopic",
"gregorian": "2026-09-11"
},
"attribution": "..."
}
}Tags
x402
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