📅 30-Day Moon Calendar
Explore the moon phases for the next 30 days. Pick a start date with the calendar and see smooth crescent visuals plus illumination for each night.
About the 30-Day Moon Calendar
The 30-Day Moon Calendar helps you track lunar phases and illumination across a full month starting from any date you choose. It’s handy for stargazing, night photography, tide awareness, gardening by the moon, or simply appreciating the rhythm of the sky. Enter a date, and the tool maps 30 consecutive nights with a clean crescent or gibbous rendering that mirrors the phase.
The lunar cycle averages 29.53 days (the synodic month). As the Moon moves from New to First Quarter to Full and back through Last Quarter, the illuminated fraction grows (waxing) and then shrinks (waning). Our calculator estimates the phase angle using a fixed astronomical reference and displays both a readable phase name and an illumination percentage for each date.
Because lunar phases aren’t aligned to the solar calendar, their dates shift slightly each month. A rolling 30-day view makes it easy to spot upcoming Full or New Moons and plan ahead. Times of exact phase can differ by time zone, but the visual pattern remains the same worldwide.
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FAQ
The tool provides approximate phases and illumination based on the average lunar cycle (≈29.53 days) from a known New Moon reference. For precise timings, consult official observatories or ephemerides.
Yes. Many gardeners plan tasks around waxing (growth) and waning (rest) phases. The calendar shows both the phase name and illumination to guide your schedule.
The phase pattern is the same worldwide, but the exact moment of New, Full, and Quarter phases varies with your time zone.