{"uid":"cap_5QCv8rRquWVf2SAvmIDaG","slug":"sindri-astronomy-ephemeris-a6206df8","name":"Sindri Astronomy Ephemeris","description":"Sunrise, sunset, solar noon, day length, and moon phase for a given latitude/longitude/date, computed via the suncalc library (standard solar/lunar position algorithms) — precise astronomical math an LLM cannot reliably compute mentally.","url":"https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/astronomyEphemeris?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"date":{"type":"string","description":"ISO date string, e.g. \"2024-06-21\"."},"latitude":{"type":"number","description":"Latitude in degrees (-90 to 90)."},"longitude":{"type":"number","description":"Longitude in degrees (-180 to 180)."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_JN5rY9zt-tEKUDJ80UppU","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes sunrise, sunset, solar noon, day length, and moon phase for a given latitude, longitude, and date using precise solar/lunar position algorithms.","exampleAgentPrompt":"What time does the sun rise and set in Paris on June 21, 2025, and what's the moon phase that day?","exampleUseCases":[{"title":"Golden hour photography planning","prompt":"I'm shooting a landscape in Denver, Colorado on July 4, 2025 — can you tell me exactly when sunrise and sunset are so I can plan for golden hour?"},{"title":"Camping trip moon phase check","prompt":"We're going backcountry camping at 36.5°N, 118.5°W starting August 12, 2025 — what will the moon phase be and how many hours of daylight can we expect?"},{"title":"Winter solstice day length lookup","prompt":"How long is the day in Tromsø, Norway (69.65°N, 18.95°E) on December 21, 2025? I want to know the exact sunrise and sunset times."}],"resultDescription":"Returns precise astronomical data for the given location and date, including sunrise time, sunset time, solar noon time, total day length in hours/minutes, and moon phase (e.g. waxing crescent, full moon, percentage illuminated), all computed from standard solar/lunar position algorithms.","failureModes":["Invalid or out-of-range latitude/longitude returns an error","Malformed or missing date string causes a validation error","Locations near the poles during polar day/night may return null sunrise/sunset times","Network timeout on the Lambda cold start"],"whenToPreferThis":"Use this endpoint when you need precise, mathematically computed astronomical data (sunrise, sunset, solar noon, day length, moon phase) for any geographic coordinate and date — especially when LLM reasoning alone would be unreliable for exact times. Prefer this over general-purpose time APIs that don't include moon phase, or over weather APIs that approximate solar data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T04:08:46.740Z","isFirstParty":false,"canonicalSlug":"sindri-astronomy-ephemeris-a6206df8"}