Moon Phase Calendar
Looking for the moon phase calendar — every new moon, full moon, and the stops in between, mapped across whatever date range you set. This calendar plots the Moon's full cycle ahead of time, so you can see when it goes dark, when it peaks, and everything in between before any of it happens.How it works ↓
Fill in the details above and compute to see your result here.
Track every new moon, full moon, and the phases between across any date range, the fastest-moving cycle in the sky, completing roughly every 29.5 days.
The whole cycle repeats roughly every 29.5 days
The Moon moves faster than any other body in the sky, which is why its cycle is the one most people track. From one new moon to the next takes about 29.5 days — the synodic month — so within a single calendar year you'll see it complete the full sequence around twelve times.
Because the cycle is short, this calendar rewards a wider date range than a single-planet ingress view would. A month shows you two or three phases; a year shows you the whole rhythm.
New moon and full moon are exact, opposite moments
A new moon happens at the exact moment the Moon and Sun share the same degree of the zodiac — traditionally read as a starting point, the moment before anything is visible yet. A full moon is the opposite: the Moon sits 180 degrees from the Sun, fully lit, traditionally read as a culmination or release point.
Everything the calendar lists between those two exact moments — the waxing and waning phases — is the Moon's gradual walk from one to the other and back.
The dates are identical no matter who's looking
This calendar runs on the same ephemeris for every visitor, so two people checking the same date range see the same phases at the same times regardless of where they were born or when. There's no birth data requirement to use it — the Moon's phase is a fact about the sky, not about you.
That's what makes it useful for planning: the timing doesn't shift based on who's asking.
Add your birth data to see which of your planets a phase touches
If you add your birth details, this calendar can layer in transits — moments when a phase's degree also lines up with a planet or point in your own chart. That's an optional deepening, not a requirement; the phase dates themselves never change, only whether a given one is also touching something personal.
This is the moon-phase slice of a bigger sky calendar
If you also want retrogrades, void-of-course windows, and planetary ingresses in the same view, the transit calendar runs all of them together with every tag switched on by default. This preset is that same calendar narrowed to just the Moon's phases.
Frequently Asked Questions
What is a moon phase calendar used for
It lists the exact dates and times of new moons, full moons, and the phases between them across a date range, so you can plan around the lunar cycle without doing the math yourself.
Do I need my birth chart to use this calendar
No — moon phases are the same for everyone on a given date. Birth data is optional and only adds a personal transit layer on top.
How often does a full moon occur
About once every 29.5 days, the same interval as the full new-moon-to-new-moon cycle, since full moon falls roughly halfway through it.