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Compute verified ephemeris and WMM2025 geomagnetic values with reliable physical accuracy.
Copy the install command and let the AI configure it · recommended for beginners
Please install the "io.github.savecharlie/almanac" MCP server from askskill: Run: claude mcp add 'io-github-savecharlie-almanac' -- npx -y almanac-compute
Calculate the Sun and Moon position parameters for Beijing at 2025-09-15 20:00 UTC. Return altitude, azimuth, right ascension, and declination with units.
Accurate Sun and Moon position data for the specified time and location, with clear fields and complete units.
Use WMM2025 to calculate magnetic declination, inclination, total intensity, and horizontal intensity for Shanghai on 2026-03-01, and include result units.
Returns WMM2025-based geomagnetic values suitable for navigation, surveying, or research.
I’m writing a short note about tonight’s sunset and geomagnetic conditions in San Francisco. First provide today’s sunset time and magnetic declination, then turn them into a brief reader-friendly explanation.
First produces trustworthy ephemeris and geomagnetic values, then converts them into reader-friendly text.
Calculate ephemeris data and planetary positions for dates and locations.
Get offline astronomy data like positions, rise/set times, phases, and eclipses.
Compute astrology charts, planetary positions, houses, aspects, and transit analysis.
Generate Swiss Ephemeris astrology charts and classical decision support readings.
Generate multi-tradition astrology charts and ephemeris-based analyses across many modes.
Fetch space weather and geomagnetic data for monitoring and research analysis.