Aha, see, that's what was I was talking about.
The texts don't make it clear, but it's actually Transiting Moon.
Remember that Age Rulers shift, so Moon rules the first 4 years, then passes the baton to Mercury, then Venus, Sun and so on through the end of life.
The theory behind that revolves (no pun intended) on the Moon being the Age Ruler for infants/toddlers. The specific days selected for viewing are based largely on biology and medicine.
Then, as now, if the infant isn't feeding by the 3rd Day, there's a medical issue. By the 7th Day, the infant should be in a regular cycle of feeding and sleeping and feeding and sleeping....ad infinitum...and if not, then a medical issue. Somewhere around Day 40, the infant's eyes should have adjusted from everything-is-one-gigantic-blurry-mess to there's-lots-and-lots of-blurry-fuzzy-things-and-some-are-shiny...meaning the infant should be grabbing/reaching for things, and reacting to stimuli such as light, movement and sound. If not, then there's a potential problem.
Okay, so we're looking at the exact Longitude of Transiting Moon on the 3rd Day (Day 4 of Infant's Life), the 7th Day (Day 8) and the 40th Day (Day 41) against the Natal Chart.
It isn't so much what we want to see, rather it's what we don't want to see on those 3 select days. We don't want to see Moon joined with Mars and/or Saturn in Cancer in a Cadent Sign. We don't want to see Moon Combust in a Cadent Sign --- although Cazimi Moon would be good. We don't want to see Moon in a Cadent Sign with Mars/Saturn, or in square/opposition to Mars/Saturn, and if that is the case, then we would want to see Jupiter, Venus or Sun in trine with Moon by Sign, or Jupiter/Venus square by Sign. We don't want to see Moon in a Cadent Sign and besieged by Malefics.
Again, this is a very generic technique to estimate the health of the Native.
I should point out that people failing to understand these concepts simply assumed that 1 Day = 1 Year of the Native's life, and then applied that to a new technique called Secondary Progressions. Anyone wondering why Secondary Progressions don't work, now you know why.
I'll try to kill 50 birds with one small pebble here.
If anyone intends to buy classical music, listen to a sample of it first, before buying. Musical works are subject to interpretation, and not every conductor of every symphony is sane. Nowhere is that more true than with Carl Orff's Cantiones Profanes --- the Profane Songs -- aka Carmina Burana.
Granted, music is highly subjective, but a recording that everyone may enjoy is the Philadelphia Symphony with the Rutger's University Choir...and I mention that since that is the recording most commonly used in film scores...and so probably the version you're all most familiar with...and you'd be gravely disappointed to spend money and not hear what you thought you heard.
The opening lines in the score are these...
O Fortuna
velut luna
statu variabilis,
semper crescis
aut decrescis;
vita detestabilis
nunc obdurat
et tunc curat
ludo mentis aciem,
egestatem,
potestatem
dissolvit ut glaciem.
That's Latin, and Holden would translate it like this...
O Fortune,
like moon
you change states,
ever waxing
and waning;
hateful life
first oppresses
and then soothes
as fancy takes it;
poverty
and power
it melts them like ice.
Dykes would translate it as such...
Fortune!
Like the Moon
[constantly] changing phases,
always increasing [in light]
or decreasing [in light];
Detesting life!
First oppressing [life]
then soothing...
and [all] on a whim;
Melting poverty
and power
as though
they were [made of] ice.
Verbatim translations may be technically and grammatically correct, and Academicians might fawn and drool over them, but they are not linguistically correct: Ma-duc acasa...Holden = Me take at home; Dykes = I'm going home.
When purchasing texts, people might want to bear that in mind.
Anyway, regarding the significations of the Planets, the Moon's primary signification first and foremost is Change.....or Instability.
How do you know which is which?
Apply the Simple Rule: "Planet, Sign, House, always."
The Planet is Moon; Moon will either be domiciled (in Cancer or Exalted in Taurus), exiled (in Capricorn or in Fall in Scorpio) or Peregrine; and Moon will be Angular, Succeedent or Cadent.
Cadent Signs/Houses are falling away from the Angles: 12th is being pushed over the hill by the Ascendant, not the MC. The MC has pushed the 9th Sign/House over. The 7th has pushed away the 6th, and the 4th Sign/House has forced the 3rd Sign/House over the cliff.
So Cadent Houses signify things that have ended or changed, and Moon in a Cadent House intensifies that, since Moon is about Change, or Instability.
That does not mean other Planets cannot suggest Change, they can, but unlike the other Planets, Moon indicates very rapid change....like the kind of change you'd see in an infant, right?
So, then, what would a Cadent distressed Moon on one of those 3 days signify? It signifies instability for the worse, while a Cadent Moon in good condition indicates positive change for the better.
Likewise, Succeedent Moons indicate a continuation of things, while an Angular Moon suggests starting something new, a new beginning or or something like that.
Why does Moon Joy in the 3rd House? Because it is Below Earth and Cadent and represents Change/Instability. Moon in 3rd increases the power of the Moon to act, but doesn't alter it's condition in the House, and since the 3rd Sign/House is Cadent to the 4th Sign/House and the 4th Sign/House is opposite the 10th House, well, there you go.
Since the Ascendant tells us about the Native, what would you say about Cancer-rising Moon in 3rd? That would be a Virgo Moon. Mercury rules Virgo. Are Mercury and Moon Planetary Friends? No, they are Planetary Enemies.
While I'm on the subject of Ascendants and Joys, Ascendant Ruler in the 6th Sign/House is what? A slave for the most part....literally...except when the Ascendant Ruler is also domiciled in the 6th Sign/House, or when Aries rises and Mars is rejoicing in the 6th Sign/House.
Taurus-rising with a 6th House Libra Venus. What is that?
6th House is what? Work? No, people, wrong answer. The 6th House is Service.
Venus signifies what? Love? No, people, sorry, wrong answer. Venus signifies the love of people....the love of Humanity.
So...then....Taurus-rising 6th House Libra Venus is service-oriented to Humanity.....I'm guessing people have a real difficult time figuring out the 10th House Aquarius thing.....and the meaning of "trine"....and whirled peas.
Mars signifies "things Martial."
Scorpio-rising 6th House Aries Mars is going to be protecting/defending Taurus-rising 6th House Libra Venus, so that Venus can perform her vital humanitarian mission, whatever that might be.
And why would Mars do that? I don't know....."trine" anyone? How about Triplicity? If Aries is the 6th Sign, then what Sign is the 10th? Leo.
And who rules Leo?
Sun.
And amongst it's significations is power, authority and government.
What then can we say about Cancer-rising 6th House Sagittarius Jupiter?
Jupiter doesn't rule Cancer. Okay, very good, but Cancer is one of the domiciles of Jupiter, since Jupiter is Exalted in Cancer.
Libra-rising, 6th Sign/House Pisces Venus is going to be different, since Cancer is the 10th Sign (that's the trine thing again).
Just thought I'd mention that since people struggle delineating Vocation. Stupid nonsense on the internet doesn't help; people make it harder than it must be ignoring the meanings of Planets; the texts really aren't all that great; and then let's face it, most of the example charts floating around are for politicians, musicians, entertainers, athletes and such, and not for truck drivers, ditch diggers, clerks, warehouse workers, firemen, managers, fast-food workers, or the wipers of other people's bottoms.
I hope that clarifies things a wee bit.