PRACTICE / 32 OF 36
Work With a Timeless Chart
By the end you can read a chart with no birth time as far as it goes, and write an honest list: what is settled, what has two candidates, and what simply is not there.
Approved original lessons, free on the web · 2026-10-12
THE IDEA
Your task: read a chart with no time as far as it goes, and write it as three columns.
Table: the Sun's sign is present, with two candidates on a changeover day; most planetary signs are present, with candidates for the fast ones on a boundary day; the Moon often has two candidates; aspects are present and need no birth time; the Ascendant is absent, its row empty; and the twelve houses are absent, the whole layer missing.
Split the chart into three columns: settled, candidates, absent.
How far it can be read
Settled: the Sun and the slow planets usually sit here. Candidates: the Moon most often, and the fast planets on a day they change sign. Absent: the Ascendant, the Midheaven, the twelve houses, and every judgement that needs a house.
Derived calculationWith those three columns written, you hold an honest list of what you have. From then on, read any description using only the first two columns, so every line you read rests on real data.
Reflection promptWhat the old texts say: Book III ch. 2 of Ptolemy's Tetrabiblos takes the rising degree as the starting point, and admits the moment of birth is often unreliable — sundials shift and water clocks get stuck.
Cited sourceThe demonstration chart is clearly marked as a demo: a teaching picture for understanding the structure.
What the demonstration chart is for
With no birth time, the personal section still lists your own Sun and Moon, with both candidates when one changed sign on your birthday; only the Ascendant row uses a position marked as a demonstration, so you can see what an Ascendant looks like. The demonstration value stays in that row, and your data holds only your own placements.
How this tool worksSo read that row as a teaching picture. Use it to understand where the Ascendant sits, then go back to your own first two columns to observe.
Reflection promptIf one day you find your birth time, the house layer really appears, and you can read your own houses directly.
How this tool worksOBSERVE YOUR OWN CHART
Look at my chart
Your turn: write your own three columns. It works with a birth time too — the third column will just be empty.
- Write down the settled placements.
- Write down the ones with two candidates, both of them.
- Write down the absent layer, and one line on how you will handle it.
Without a birth time, rising sign and houses stay blank.
LOOK CLOSER
A common mix-up
“The demonstration chart is the app's guess at mine.”
The demonstration is a fixed set of teaching placements, and the screen clearly marks it as a demonstration; your chart comes only from your own birth data.
“Something in the third column means my chart is worse.”
The third column simply records which piece of data is missing. The first two columns can still be read and are well worth observing.
CHECK YOURSELF
Now, try it yourself.
Sources and rights
- Ptolemy, Tetrabiblos, trans. F. E. Robbins (Loeb Classical Library, 1940)
Book III ch. 2 takes the rising degree as the starting point and admits the moment of birth is often unreliable, through a sundial's shifted position or gnomon and a water clock's stoppages or uneven flow. The three-column format and the use of a demonstration chart are this lesson's and this app's doing, not the text's.
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
Limits of this lesson
Read descriptions from the first two columns only; without a birth time the third column (Ascendant, Midheaven, houses) does not exist, so do not read it in.
The demonstration chart is a fixed set of teaching placements, not your chart; its values stay in the demonstration section, so write your own list from your own placements only.
YOUR STUDY
Write what you learned in your own words.
Write your three columns here; the next lessons keep coming back to them.
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