Harmonic Charts
What harmonic charts reveal, how to select a harmonic number, what each common harmonic means, and how to read the chart.
A harmonic chart multiplies each planet's zodiac longitude by a chosen integer and plots the result, amplifying angular relationships that are difficult to spot in a standard natal chart. This technique brings hidden aspect patterns and latent talents into clear view.
What Are Harmonic Charts
In a standard natal chart, major aspects - conjunction, square, trine, and so on - receive the most attention. Subtler divisions such as quintiles (5th harmonic) and septiles (7th harmonic) are easy to overlook.
A harmonic chart recalculates each planet's position by multiplying its longitude by the harmonic number and taking the remainder after dividing by 360 degrees. Planets that share the targeted angular relationship in the natal chart appear as conjunctions in the harmonic chart, making the pattern immediately visible.
How to Access
You can open a harmonic chart from the birth data page.
- Navigate to your birth data page and display a chart
- Open the chart type dropdown menu
- Select "Harmonic Chart"
- Choose a harmonic number
Choosing a Harmonic Number
HOSHIDOU supports harmonic numbers from 2 through 12. The chart recalculates instantly each time you change the number.
Different numbers highlight different aspect families. Choose the number that matches what you want to investigate.
Common Harmonics and Their Meanings
Each harmonic number carries a distinct theme. The table below lists the most frequently used numbers.
| Number | Aspect highlighted | Theme |
|---|---|---|
| H2 | Opposition (180 degrees) | Polarity, tension and integration |
| H4 | Square (90 degrees) | Drive, conflict, growth through challenge |
| H5 | Quintile (72 degrees) | Creativity, talent, unique self-expression |
| H7 | Septile (approx. 51.4 degrees) | Inspiration, intuition, mystical impulse |
| H8 | Semi-square (45 degrees) | Transformation, growth through crisis |
| H9 | Novile (40 degrees) | Spirituality, soul maturity, inner awakening |
| H12 | Semi-sextile (30 degrees) | Subtle adjustment, latent ability |
Reading the Chart
The primary focus in a harmonic chart is the conjunction (0 degrees). Planets that formed the targeted angular relationship in the natal chart now appear conjunct.
- Tight conjunctions - Indicate a strong expression of the harmonic's theme
- Multi-planet clusters - Suggest compound talent or energy around that theme
- Aspect patterns - Grand trines, T-squares, and other configurations that appear in the harmonic chart are also meaningful
Comparing the harmonic chart alongside the natal chart yields deeper insight. You can view the natal chart via Single Wheel.
Table Views and Tooltips
Harmonic charts support table views including the planet table and aspect matrix. Hover over (or tap) any planet glyph to see a tooltip showing the harmonic-adjusted degree.
Tooltip content can be customized in Tooltip Settings.
Exporting the Chart
You can export your harmonic chart as an image or PDF. For instructions and supported formats, see Chart Export.