🌅 Sunrise & Sunset MCP

The Sunrise and Sunset API (by sunrise-sunset.org) makes it effortless to retrieve accurate sunrise, sunset, and twilight times anywhere in the world.
By converting it into an MCP service, you can let AI agents answer questions like “When is sunset in New York tomorrow?” or “How long is the day in Tokyo today?” in natural conversation.

🔑 API Features

☀️ Core Endpoint

• GET /json → Returns sunrise, sunset, and twilight data.

Parameters supported:

• lat & lng → Latitude/longitude (required).
• date → Specific date (YYYY-MM-DD), or keywords like today, tomorrow.
• formatted → 1 = human-readable (AM/PM), 0 = ISO 8601 + day_length in seconds.
• tzid → IANA timezone (e.g., America/New_York). Defaults to UTC.
• callback → Optional JSONP.

Response includes:

• sunrise, sunset, solar_noon
• day_length (in hh:mm:ss or seconds)
• Twilight phases: civil, nautical, astronomical begin/end

📌 Example Use Cases

• 🌍 Travel Apps — Show day length and golden hour for photographers.
• 🧘 Wellness Platforms — Sync meditation or sleep routines with sunrise/sunset.
• 🔭 Astronomy Apps — Calculate twilight times for stargazing events.
• 🤖 Personal AI Assistants — Conversational answers: “How long is the day in London next Monday?”

⚡ Powered by XPack

With XPack, this simple but powerful API becomes a ready-to-use MCP service:

• 🚀 Expose natural queries like “What time is sunset in Paris?”
• 💡 Combine with weather APIs to build smarter outdoor planners.
• 💸 Monetize your MCP with per-call billing or bundle into travel/astro toolkits.

👉 The Sunrise & Sunset MCP shows how even small datasets can power delightful user experiences when wrapped with XPack.