Touch of Magick Shop · Beginner Foundations
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An old book may ask you to choose a planetary hour. Before reaching for a clock, pause: its “hour” may not mean sixty minutes. Learning the distinction turns a mysterious instruction into something you can examine, without letting a timetable rule your life.
What are planetary hours?
Planetary hours assign successive portions of day and night to seven celestial bodies. Here “planetary” follows a historical system that includes the Sun and Moon, not the modern astronomical category. A planetary day names the whole cycle; an hour identifies one part within it. Neither is a measurement of spiritual power.
Read the method, not just the label
In Three Books of Occult Philosophy, II.34, Heinrich Cornelius Agrippa reports a common method: divide sunrise-to-sunset into twelve equal portions, then divide sunset-to-next-sunrise into another twelve. Day portions and night portions can have different lengths. He also describes dissenting practitioners who used a different, ecliptic-based calculation. Our example uses the first method he reports, not every historical approach.[1]
Oxford’s History of Science Museum documents an astrolabe scale measuring twelfths of daylight. Unequal hours belong to the history of timekeeping as well as astrology; an instrument’s scale is not evidence that a ritual produces supernatural effects.[2]
Agrippa’s complete work appeared in 1533. Scholar Vittoria Perrone Compagni places it within his Renaissance philosophical and religious project. Read its claims in that setting, rather than treating them as modern science or a universal spiritual rule.[3]
A worked example on paper
Imagine a day with sunrise at 6:00 a.m., sunset at 8:00 p.m., and the following sunrise at 6:00 a.m. These are invented teaching times, not today’s local forecast. Fourteen daylight hours equal 840 minutes: divided by twelve, each daytime portion lasts 70 minutes. Ten nighttime hours equal 600 minutes: each nighttime portion lasts 50 minutes.
The first daytime portion is therefore 6:00–7:10 a.m.; the second is 7:10–8:20 a.m. The first nighttime portion is 8:00–8:50 p.m. A fixed clock-time list cannot represent this method for every place and date. For real calculations, record the location, date, time zone, and sunrise/sunset source, and account for any clock change. If sunrise or sunset does not occur, this simple division cannot be applied as written.
Correspondences: order, not promises
Cassius Dio’s Roman History 37.19 gives the repeating order Saturn, Jupiter, Mars, Sun, Venus, Mercury, Moon. Agrippa’s reported method starts the daylight cycle with the ruler of that weekday. Starting on a Sunday gives the example below; it is a sequence exercise, not advice about what will succeed.[4] [1]
| Sunday portion | Historical assignment / Correspondencia | Basis |
|---|---|---|
| First daylight hour | Sun / Sol | Weekday ruler starts the cycle. |
| Second daylight hour | Venus / Venus | Next in the repeating order. |
| Third daylight hour | Mercury / Mercurio | Continue the same sequence. |
| Fourth daylight hour | Moon / Luna | Continue; Saturn follows next. |
Original shop practice: make room for a pause
This is our contemporary reflective exercise, not a reconstructed ceremony. You need only paper and pencil.
- Copy the invented sunrise and sunset times above. Work out the first two daylight portions yourself, then check the answers.
- Label the calculation “Historical method, imaginary example.” Keep it separate from any personal meaning.
- Choose a convenient five-minute pause in your actual day. It need not coincide with a planetary hour.
- Write one intention within your control: “I will check my assumptions before replying.” Do not make someone else’s feelings or decisions your target.
- Afterward, note what you actually did. If the timing was inconvenient, change it. You have not missed a spiritual deadline.
Optional gold and purple pencil marks are our design choices, not universal planetary colors. No flame, ingestion, skin application, outdoor observation, or special object is needed. Never look directly at the Sun. Do not postpone care, responsibilities, or an important decision to obtain a supposedly favorable hour. The hourglasses in our illustration are decorative, not calibrated instruments.
Journal prompt
When does a chosen rhythm support my attention, and when does it begin to feel like a rule I cannot question?
Sources & further reading
- Agrippa, Three Books of Occult Philosophy, II.34Primary text in the 1651 J. F. translation; reports different methods of dividing planetary hours.
- History of Science Museum, Oxford: Unequal-hours scaleCatalogue evidence for measuring twelfths of daylight.
- Vittoria Perrone Compagni, “Heinrich Cornelius Agrippa von Nettesheim”Stanford Encyclopedia of Philosophy; scholarly context for Agrippa’s work.
- Cassius Dio, Roman History 37.18–19Primary account of the planetary sequence, in the Loeb translation hosted by LacusCurtius.