{"uid":"cap_jOFtfeBhhJHhpvSksfBmh","slug":"calendar-systems-gregorian-to-islamic-tabular-civil-calendar-converter-155cf0cc","name":"Calendar Systems – Gregorian to Islamic Tabular Civil Calendar Converter","description":"Convert a Gregorian date to the Islamic tabular civil calendar (or back); a calculated approximation, not moon sighting.","url":"https://calendar-systems.x402tookit.com/islamic-calendar?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["date"],"properties":{"date":{"type":"string","description":"YYYY-MM-DD, in the Gregorian calendar (default) or in the islamic calendar when from=islamic"},"from":{"enum":["gregorian","islamic"],"type":"string","description":"gregorian (default) or islamic: which calendar the date is written in"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"asOf":{"type":["null","string"]},"from":{"type":["null","string"]},"source":{"type":["null","string"]},"islamic":{"type":["null","object"],"properties":{"day":{"type":["null","number"]},"text":{"type":["null","string"]},"year":{"type":["null","number"]},"input":{"type":["null","string"]},"month":{"type":["null","number"]},"leapYear":{"type":["boolean","null"]},"monthName":{"type":["null","string"]},"observances":{"type":["array","null"],"items":{"type":"object","properties":{"name":{"type":["null","string"]},"gregorian":{"type":["null","string"]},"islamicDate":{"type":["null","string"]}}}},"yearLengthDays":{"type":["null","number"]},"monthLengthDays":{"type":["null","number"]}}},"reasons":{"type":["array","null"],"items":{"type":"string"}},"summary":{"type":["null","string"]},"verdict":{"type":["null","string"]},"weekday":{"type":["null","string"]},"degraded":{"type":["boolean","null"]},"gregorian":{"type":["null","object"],"properties":{"day":{"type":["null","number"]},"iso":{"type":["null","string"]},"year":{"type":["null","number"]},"month":{"type":["null","number"]},"weekday":{"type":["null","string"]}}},"supported":{"type":["boolean","null"]},"disclaimer":{"type":["null","string"]},"notChecked":{"type":["array","null"],"items":{"type":"string"}}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ZlB4c2Xy_4r1OH_XzicXX","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Converts a Gregorian date to the Islamic tabular civil calendar date (or vice versa), returning month name, leap year status, observances, and a disclaimer that this is a calculated approximation, not based on moon sighting.","exampleAgentPrompt":"What is the Islamic Hijri tabular calendar date for March 15, 2025? Please also tell me the Islamic month name and whether it's a leap year.","exampleUseCases":[{"title":"Islamic holiday planning for an event","prompt":"I'm planning an event and need to know what Islamic date March 20, 2026 falls on — give me the Hijri day, month name, and any Islamic observances around that date."},{"title":"Convert Islamic date to Gregorian","prompt":"Can you convert the Islamic date 15 Ramadan 1446 to its Gregorian equivalent? Use the from=islamic direction."},{"title":"Birthday in the Islamic calendar","prompt":"My friend was born on July 4, 1990 — what was their birth date in the Islamic tabular civil calendar, and what Islamic month were they born in?"}],"resultDescription":"Returns a structured object containing the corresponding Islamic calendar date (day, month number, month name, year), whether it is a leap year, the length of the month and year in days, any Islamic observances on that date, the source Gregorian date components, the weekday, and a disclaimer noting the result is a calculated tabular approximation rather than a moon-sighting-based determination.","failureModes":["Missing required 'date' query parameter returns an error","Invalid date format (not YYYY-MM-DD) causes a parse error","Date out of supported range may return unsupported flag","Invalid 'from' enum value (not 'gregorian' or 'islamic') causes validation failure","Islamic date that does not exist in the tabular calendar may return an error or degraded result"],"whenToPreferThis":"Use this endpoint when you need a deterministic, algorithmically-calculated conversion between Gregorian and Islamic calendar dates. Ideal for scheduling, date display, religious planning applications, or any context needing Hijri dates without relying on regional moon-sighting announcements. Prefer over manual calculation or moon-phase-based services when a fixed, reproducible tabular result is needed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T13:13:38.341Z","isFirstParty":false,"canonicalSlug":"calendar-systems-gregorian-to-islamic-tabular-civil-calendar-converter-155cf0cc"}