A calculated lunar calendar and almanac: exact Moon phases, tropical Moon sign ingresses, eclipses, and daily Moon signs in your timezone, with live calendar subscriptions, ICS downloads, printable PDFs, and an almanac you can ask in plain words.
AstroMoon calculates instantaneous celestial coordinates client-side using high-precision planetary and lunar algorithms from astronomy-engine@2.1.19 (VSOP87 / ELP2000-82). It provides day-by-day lunar illumination fractions, exact New/Full Moon syzygies, solar and lunar eclipses, and sub-second zodiac sign ingresses adapted to your local observer timezone.
It shows the Moon’s tropical zodiac sign at noon in your selected timezone. An ingress marks the time the Moon enters a new sign. Select a date for its noon position, timed events, and traditional interpretations, which are not scientific predictions.
The tropical zodiac uses twelve equal 30° signs, starting with Aries at the March equinox. Moon positions are calculated from Earth’s center using astronomy-engine and mapped to tropical signs rather than constellation boundaries.
The same event can fall on different calendar days in different timezones. Choose your timezone under Your sky to use your local dates and times, including daylight saving changes. Eclipse entries mark global peaks and do not indicate local visibility.
Open Subscribe to add a live feed to Apple Calendar, Google Calendar, Outlook, or any app that accepts a webcal URL; it updates automatically. Use Export to download a one-time ICS file for import, or a PDF for printing with whole months on A4 pages (up to 24 months) or a data table for your exact date range.
Yes. Open Ask and type a question, such as “When is the next full moon in Scorpio?” An AI model chooses what to look up and words the reply, but every date, time, and sign comes from AstroMoon’s own calculations, and you can see how each answer was found. You can also describe a printable calendar or .ics file to have the export form filled in for you, or search the traditional sign and phase themes privately on your device. See the AI tab under How we calculate for details.
Choose Northern or Southern under Your sky to flip the Moon illustrations. Event times, zodiac positions, and illumination percentages stay the same. The Moon’s actual tilt also depends on your location and observation time.