Three questions that should stay separate
First, where is the body under the chosen astronomical and zodiac settings? Second, which astrological rule assigns meaning to that position? Third, what evidence supports a claim made from that meaning? A precise answer to the first question does not automatically validate the other two.
The label 15° by itself does not identify a planet, a sign, a house or a date. Repeating a number across unrelated charts can produce an interesting hypothesis, but it does not establish a reliable predictive rule.
| Layer | What to record |
|---|---|
| Position | Planet, longitude, zodiac, timestamp and source |
| Subdivision | Named decan or bounds scheme and endpoints |
| Symbolism | Author or tradition, stated meaning and uncertainty |
A symbolic association is not another coordinate
A modern reading may associate certain degree numbers with a sign or life theme. That does not physically move a planet into that sign, replace its actual sign ruler or alter its house. Keep an additional symbolic layer visibly separate from the computed chart.
Decans and bounds have their own interval definitions. They should not be renamed degree theory as though all methods used the same rules. Two readings can disagree because they selected different systems rather than because one calculator produced the wrong longitude.
Make a reading reproducible
Write down the exact coordinate before rounding, the zodiac and ayanamsa, and the source of the interpretive rule. State what the rule predicts or helps you reflect on before inspecting the story you want to explain. Consider counterexamples as well as apparent matches.
Use symbolic ideas as optional prompts. Do not turn a degree into a diagnosis, financial instruction or fixed claim about another person. When an interpretation sounds certain, ask what evidence could show it to be mistaken.
A CONCRETE EXAMPLE
A comparison exercise with the same coordinate
Take the invented position 14°15′ Gemini. Its second decan follows directly from three equal 10° intervals. A bound ruler requires a named unequal-interval table. A modern symbolic meaning for the number 14 requires yet another chosen rule.
These three operations may produce different labels without any change to the underlying 74.25° longitude. Keep three separate lines in your notes instead of treating the labels as independent proof of the same claim.
Check the coordinate.
Use the longitude converter to check signs and intervals, or calculate your chart to find actual placements.
Open the degree converterCommon questions
Does a high-precision ephemeris prove degree theory?
No. It supports the position calculation under stated assumptions, not the predictive validity of a symbolic interpretation.
Which system does the converter use?
It converts longitude to equal 30° zodiac intervals and degrees/minutes/seconds. It does not assign degree-theory meanings or traditional dignity rulers.
Calculation & interpretation
New personal calculations use Skyfield with JPL DE440 data and the site’s documented house and zodiac rules. The preserved Greenwich teaching chart has its own historical source label. Worked arithmetic and geometry examples are labelled separately. Astrological meanings are symbolic conventions, not established scientific predictions.
Birth time and place affect angles and houses. Unsupported or ambiguous inputs return an error rather than an invented chart. Personal results stay in browser state and do not create public result URLs.
Read the calculation settings guide