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Astro Times – Sunrise/Sunset & Twilight Calculator
x402
Astro Times – Sunrise/Sunset & Twilight Calculator is a paid API for AI agents from x402.agentutility.ai, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Computes sunrise, sunset, solar noon, day length, golden hour, and civil/nautical/astronomical twilight times for any lat/lon on any date, returning UTC ISO8601 strings.
Price / call$0.005
Success—
StatusUnknown
How this service works
Sunrise sunset times. Computes sunrise, sunset, solar noon, day length (seconds), and civil / nautical / astronomical twilight begin & end for any latitude/longitude on any date. Also covers golden hour, dawn / dusk, and full astronomy-times. UTC ISO8601 strings. Wraps sunrise-sunset.org's public API — no auth, commercial-OK.
Output
A JSON object containing the date, latitude/longitude, and a full set of solar times: sunrise, sunset, solar noon, day length in seconds, civil/nautical/astronomical twilight begin and end times — all as UTC ISO8601 strings. Also includes the upstream source URL (sunrise-sunset.org).
Example use cases
Golden hour shoot location planning
“I'm doing a landscape photography session near Denver, Colorado on September 15th — what time does golden hour start and end in the morning, and when is sunset and civil twilight in the evening?”
Outdoor event scheduling at dusk
“We're planning an outdoor wedding reception in Miami on October 10th — what time does the sun set and when does civil twilight end so we know when to turn the lights on?”
Nautical navigation twilight window
“I'm sailing out of Sydney, Australia on March 20th and need to know when nautical twilight begins in the morning and ends in the evening so I can plan my watch schedule.”
Technical details
Endpoint
POSThttps://x402.agentutility.ai/astro-timesWhen to prefer
Choose this endpoint when you need precise, astronomy-grade solar event times (including all twilight categories, golden hour, and solar noon) for any geographic coordinate and date, with no API key required and pay-per-call USDC pricing that suits autonomous agents. Prefer it over weather APIs that only provide approximate sunrise/sunset, or when you need the full set of twilight phases for navigation, photography, or scheduling.
Side effects
- Invalid or out-of-range latitude/longitude returns an error
- Malformed date format causes a parsing failure
- Dates far in the past or future may return less accurate results
- Network timeout if the upstream sunrise-sunset.org API is unavailable
- Missing required fields (lat, lon, or date) result in a 4xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"date": "2026-05-06",
"times": {
"sunset": "2026-05-07T03:11:30+00:00",
"sunrise": "2026-05-06T13:08:42+00:00",
"solar_noon": "2026-05-06T20:10:06+00:00",
"civil_twilight_end": "2026-05-07T03:40:42+00:00",
"day_length_seconds": 50568,
"civil_twilight_begin": "2026-05-06T12:39:31+00:00",
"nautical_twilight_end": "2026-05-07T04:15:36+00:00",
"nautical_twilight_begin": "2026-05-06T12:04:38+00:00",
"astronomical_twilight_end": "2026-05-07T04:51:59+00:00",
"astronomical_twilight_begin": "2026-05-06T11:28:14+00:00"
},
"source": "https://api.sunrise-sunset.org/json",
"location": {
"lat": 37.7749,
"lon": -122.4194
}
}
}Tags
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