New Moon
The cycle begins in darkness. The new moon is traditionally a time for intention rather than announcement — deciding quietly what the next month is for.
What This Phase Suits
Starting something small, setting an intention, resting before effort
The Dark Point
A new moon happens when the Moon sits between the Earth and the Sun, so the lit half faces entirely away from us. Nothing is visible, which is why the phase is dark rather than merely dim.
It is an exact moment rather than a night — the instant the Sun and Moon share the same ecliptic longitude, which astronomers call conjunction.
The Moon rises and sets with the Sun during this phase, so it is above the horizon all day and below it all night, which is the other reason nobody sees it.
What The Tradition Does With It
New moons are read as openings. The associations are beginnings, intentions and things set in motion before there is anything to show for them.
The practical form this takes is the new moon intention: writing down what you are starting at the dark of the moon and reviewing it at the full. As a fortnightly review habit that is perfectly sensible, whatever one makes of the framing.
It is also the phase most associated with rest before activity — the pause at the bottom of a cycle rather than the activity itself.
The Sign It Falls In
Because the Sun and Moon are conjunct, a new moon always occurs in the sign the Sun currently occupies. A new moon in October is in Libra or Scorpio and cannot be anywhere else.
That makes the twelve new moons of a year a tour through the zodiac, one per sign, which is the structure most lunar-calendar practice is built on.
Practitioners read the sign for the character of the opening — a Capricorn new moon for structural beginnings, a Gemini one for anything involving information or contact.
Solar Eclipses
A solar eclipse is a new moon that occurs close enough to a lunar node for the Moon to cover the Sun. They happen two to five times a year, and total ones are visible from only a narrow track.
Traditional astrology treats eclipses as significant and modern practice is divided about how much weight to give them. What is not in dispute is that nothing about the phase changes; the alignment is simply tighter.
Never look at a partial solar eclipse without proper filters. That is the one genuinely important thing on this page and it is optical, not astrological.
What It Does Not Do
A new moon does not affect health, mood, sleep, fertility or behaviour, and no phase does. The research on this is extensive and consistently negative.
It also does not make an undertaking more likely to succeed. Starting something at a new moon is a scheduling choice, and the tradition's own better sources present it as a rhythm rather than as leverage.
Nothing here bears on decisions requiring qualified advice.
Common Questions
Can I see a new moon? No. The lit side faces away from us entirely, and the Moon is in the sky during daylight hours.
What is the difference between a new moon and a dark moon? Modern usage treats them as the same. Some traditions reserve dark moon for the last days before the exact new moon.
What is a black moon? A second new moon in one calendar month, the new-moon counterpart of the blue moon. It is a calendar coincidence rather than an astronomical event.