{"uid":"cap_ZweN60UEdcPwS1r-E07EP","slug":"lilambd-calendar-converter-non-gregorian-to-gregorian-8dd4e228","name":"Lilambd Calendar Converter — Non-Gregorian to Gregorian","description":"A crossing for play, feeling, language, science and computation — creating states that do not have names yet.","url":"https://api.lilambd.com/calendars/to-gregorian?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"required":{"type":"string"},"properties":{"type":"string"},"additionalProperties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"data":{"jdn":2461295,"input":"2019-01-01","calendar":"ethiopic","gregorian":"2026-09-11"},"attribution":"..."}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_vBamGP4CIZiQRfIslM7RW","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"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.","exampleAgentPrompt":"What is the Gregorian date for January 1, 2019 in the Ethiopic calendar? I need the Julian Day Number too.","exampleUseCases":[{"title":"Ethiopian date to Gregorian for scheduling","prompt":"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?"},{"title":"Historical chronology research","prompt":"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?"},{"title":"Localization for multi-calendar app","prompt":"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?"}],"resultDescription":"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'}.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-11-04T06:37:42.446Z","isFirstParty":false,"canonicalSlug":"lilambd-calendar-converter-non-gregorian-to-gregorian-8dd4e228"}