PRACTICE / 30 OF 36
Read Your Moon Placement
By the end you can read your own Moon — its sign, any two candidates, and how far it sits from your Sun — and check it against something that really happened.
Approved original lessons, free on the web · 2026-10-12
THE IDEA
Your task: read your Moon, then check it against one real moment of pressure.
Table: the Moon stays in a sign about two days, the Sun about a month, Mars about two months, Jupiter about a year and Saturn about two and a half years. All averages from NASA orbit periods; retrograde motion changes any single pass.
The Moon changes sign every couple of days, so it often has two candidates — read both.
Read the candidates together
The Moon goes round the Earth in about 27.32 days (NASA figure), which works out at a new sign every couple of days. So people without a birth time very often get two candidates.
Derived calculationThis time, read both, then see which one is closer to how you actually react.
Reflection promptThe comparison becomes one observation of your own, ready for your note. Both candidates stay side by side in the chart, so you can check them again whenever something new happens.
How this tool worksWhat the old texts say: Book III ch. 13 of Ptolemy's Tetrabiblos gives the feeling, non-rational part of a person to the Moon and the rational part to Mercury, and says such judgements need many observations together.
Cited sourceRecall how you really reacted first, then read the description.
Check it against one real moment
The check starts with something that really happened: recall it first, then compare. Think of the last time you really felt under pressure: was your first move to speak up, go quiet, leave, or busy yourself with something else? Write it down, then see whether the Moon's description matches.
Reflection promptA mismatch is a result too. Maybe you read the wrong candidate, or maybe that reaction comes more from how you were raised than from the chart. Both are honest, and both belong in your note.
Reflection promptWhat the old texts say: Book I ch. 2 of the Tetrabiblos says predictions sometimes fail, and that seed, place of birth, upbringing and custom all make a difference and must be considered too.
Cited sourceOBSERVE YOUR OWN CHART
Look at my chart
Your turn: write your reaction first, then read the description — not the other way round.
- First write down your first move the last time you were under pressure.
- Then read your Moon sign. If there are two candidates, read both.
- Write one line: what matched, and what did not?
Without a birth time, rising sign and houses stay blank.
LOOK CLOSER
A common mix-up
“With two candidates, just pick the one that feels more like me.”
The comparison is one observation of yours; both candidates stay, and more experiences can be checked against them later.
“The Moon description missed, so astrology is useless.”
Book I ch. 2 of the Tetrabiblos itself says predictions fail and that upbringing and custom make a difference too. A mismatch is a normal result.
CHECK YOURSELF
Now, try it yourself.
Sources and rights
- Ptolemy, Tetrabiblos, trans. F. E. Robbins (Loeb Classical Library, 1940)
Book III ch. 13 gives the sensory, non-rational part to the Moon and the rational to Mercury and says such judgments need many complicated observations; Book I ch. 2 says predictions sometimes fail and that seed, place of birth, rearing and custom contribute. Writing the reaction before reading the description is this lesson's arrangement.
The Robbins translation is in the public domain, as the University of Chicago LacusCurtius copyright page records. The transcriber's own notes and layout are not cited. · 2026-10-10 - NASA NSSDCA, Moon Fact Sheet (updated 2024-01-11)
Revolution period 27.3217 days. “About two days to a sign” is our arithmetic from that figure, not a stated number.
Under NASA's images and media guidelines, NASA-produced content is generally not copyrighted and may be used for educational purposes, while the NASA insignia and third-party material carry separate restrictions. Only the figures are used here — no insignia, no imagery. · 2026-10-10
Limits of this lesson
Without a birth time the Moon often has two candidates; the comparison is your own observation, and both candidates stay side by side in the chart.
A chart is a language for describing yourself, not a prediction; when a description misses, the reaction may come mainly from upbringing.
YOUR STUDY
Write what you learned in your own words.
Write it down: your reaction under pressure, and where it matched or missed the Moon's description.
Your note stays in this browser. Switching languages will not translate it.