What it is
The Moon does not make its own light. What we see as its phase is the sunlit part of it that faces Earth, and that changes as the Moon orbits us. One full cycle — new Moon to new Moon — takes about 29.5 days.
The eight named phases run in order: new Moon (dark, Moon between Earth and Sun), waxing crescent, first quarter (half lit, growing), waxing gibbous, full Moon (fully lit, opposite the Sun), waning gibbous, last quarter (half lit, shrinking), waning crescent. Waxing means the light is growing; waning means it is fading.
This is plain astronomy, visible from any window. Astrology adds a symbolic layer: the waxing half as beginning and building, the full Moon as visibility and culmination, the waning half as release and rest.
Why it matters for daily reflection
The lunar cycle is the one piece of the sky most people can actually see, which makes it the honest place to start. You do not need a chart to notice that you feel more exposed around a full Moon, or that a new Moon week is when you tend to start things. Whether the Moon causes any of that is not the point — the cycle gives you a repeating frame to check yourself against.
Roughly a month long, it is also a good size for an intention. Set one at the new Moon, look at it at the full, let it go at the dark. The rhythm does the scheduling for you.
In Lunara
Today's Moon — its phase and its sign — is what Lunara's daily Signal is grounded in. Each day the app reads the current Moon against your birth chart and offers one Signal, one intention to carry, one small practical step, and an evening Echo to note what actually answered. Over days, the Resonance Map lets you see the pattern across a whole lunar cycle.