Count complete signs from the rising sign
Whole-sign houses assign house one to the entire zodiac sign containing the Ascendant; each successive sign becomes the next house. This is a sign-counting rule, so the first-house boundary is the beginning of the rising sign, not necessarily the Ascendant’s exact degree. Swiss Ephemeris documents this construction separately from equal houses starting at the Ascendant.
In a synthetic example, an Ascendant at 17° Gemini makes all of Gemini house one, Cancer house two, and Leo house three. A planet at 2° Leo is therefore in house three under this rule. Its sign is Leo regardless of its house assignment.
Compare the construction before the reading
Whole-sign and equal-house charts both use 30° spans, but their house-one boundaries differ. With an invented Ascendant at 17° Gemini, equal houses beginning at the Ascendant place a 2° Gemini planet before its first cusp, while whole-sign houses place it in Gemini house one. The result follows the construction rule.
A quadrant system is another distinct construction. Keep the birth data constant and list the house method before comparing which house, if any, changes.
Keep houses and angles distinct
The Ascendant is a local chart angle, while a whole-sign first house is a 30° zodiac sector selected from the Ascendant’s sign. The Midheaven is likewise a separate angle. It can fall in a house other than the tenth whole sign, so its exact degree must be calculated and displayed rather than inferred from the house number.
Use Chart data and conventions to record time, place, time zone, zodiac and house method. An approximate birth time can change the Ascendant’s sign and therefore every whole-sign house; represent that uncertainty before making a house-dependent claim.
Attribute topics to a chosen method
House topics and judgment rules belong to traditions, schools, and texts; the whole-sign calculation establishes only placement under its stated rule. A reproducible assignment does not establish a topic or prediction, nor prove superiority over another convention.
For annual profections, use the dedicated tool’s stated tropical whole-sign convention and read the linked method before applying its sequence. For another tradition, start with that tradition’s own source and retain its zodiac and house assumptions instead of mixing them silently.
Word origin · etymology
Descriptive English method name.
Whole-sign states that one entire sign serves as one house; the wording distinguishes the division rule directly.
How we know · epistemology
Traditional counting rule
House assignment follows the Ascendant’s sign and a twelve-sign count. Its reproducibility comes from the rule; agreement within that rule does not demonstrate superiority over other house conventions.
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These links connect subjects and terminology. They do not establish a shared historical origin.
Sources & provenance
Use the citations beside each section to distinguish a calculation convention, a historical teaching and an editorial example.