Astrology
Moon Calendar
Track the eight lunar phases month by month, spot void-of-course Moon windows, and see the sign the Moon is travelling through — with a gardening view for planting by the Moon.
The Moon moves through its full cycle roughly every 29.5 days, waxing from the dark New Moon to the bright Full Moon and waning back again. Each of the eight phases carries a recognisable feel — the New Moon for setting intentions, the First Quarter for decisive action, the Full Moon for culmination and release, the waning phases for review and rest. A Moon calendar simply lays this rhythm out day by day.
Alongside its phase, the Moon travels through one zodiac sign every two to three days, colouring the mood of the day. Between leaving its last major aspect and entering the next sign, the Moon is "void-of-course" — a traditional pause where plans are said to drift and it is better to tie off loose ends than to launch something new. Many people also plant, prune and harvest by the Moon, following the old biodynamic calendar.
GemZen's Moon Calendar renders any month as a grid: each day shows the phase, the Moon's sign, and the exact New and Full Moon moments. Toggle the gardening view to see planting guidance, or switch on the void-of-course layer to find those quiet windows — and pin them straight into your journal calendar so the timing is there when you next open it.
How it works in GemZen
1
Pick a month
Choose any month and year and step forward or back a month at a time. GemZen lays the whole month out as a calendar grid with the phase and Moon sign for every day.
2
Layer in the detail
Toggle the gardening view for planting-by-the-Moon guidance, or turn on the void-of-course layer to reveal each VOC window with its start, end and duration.
3
Pin the timing
Send void-of-course periods and lunar events straight to your journal calendar, so the Moon’s rhythm sits alongside your own notes and reflections.
The eight lunar phases
One full cycle, from the dark New Moon to the last Waning Crescent.
New Moon
beginnings · intention · seeds
Waxing Crescent
emergence · hope · faith
First Quarter
action · decision · challenge
Waxing Gibbous
refinement · adjustment · patience
Full Moon
culmination · illumination · manifestation
Waning Gibbous
gratitude · sharing · teaching
Last Quarter
release · forgiveness · letting go
Waning Crescent
rest · surrender · healing
Common questions
Is the Moon calendar free?
Yes — create a free GemZen account and browse the monthly phases and Moon signs at no cost. The gardening view, void-of-course layer and calendar pinning come with paid plans.
What does "void-of-course" mean?
It is the stretch after the Moon makes its final major aspect in a sign and before it enters the next sign. Tradition treats it as a low-momentum window — good for finishing and reflecting rather than starting something new.
What is the gardening view?
It maps the phase and Moon sign onto the old biodynamic idea of planting, pruning and harvesting by the Moon — sowing as the Moon waxes, tending and clearing as it wanes.
Can the Moon calendar predict what will happen?
No. It shows real astronomical phases and positions, but the guidance is offered for reflection and entertainment — not medical, legal or financial advice.
Explore more
Open this month’s Moon calendar
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