Hours
Definition
In traditional astrology, hours usually refers to planetary hours: divisions of the day and night assigned in sequence to the seven classical planets. Daytime and nighttime are each divided into twelve unequal hours, so their clock length changes with the season and location. The planet ruling the first hour after sunrise also rules that weekday.
Astrological Meaning
Each planetary hour is associated with the symbolism of its ruler. Saturn hours may suit discipline, boundaries, or long-term work; Jupiter hours can emphasize growth, counsel, and generosity; Mars hours favor decisive effort but may feel heated; Sun hours highlight visibility and authority; Venus hours support harmony, art, and relationships; Mercury hours favor communication, study, and commerce; Moon hours relate to care, change, and everyday needs. Astrologers may combine the planetary hour with the planetary day, electional considerations, and the relevant natal chart rather than treating it as an isolated promise of success.
Why It Matters
Planetary hours provide a simple traditional method for choosing a time whose symbolism matches an intended activity. They can also add context to horary or event charts. Because these hours are based on local sunrise and sunset, accurate location and date matter. Their use is best understood as symbolic timing guidance, not a guarantee of a particular outcome.
Related Encyclopedia Entries
- Traditional Astrology
- Astrological Terminology
- Natal Chart
- Planetary Hours
- Electional Astrology
- Horary Astrology
Continue Learning
Connect this Encyclopedia entry with our larger Astrology guides and in-depth interpretive libraries.

