Planetary Hours

Definition

Planetary Hours are divisions of the day and night assigned to the seven traditional planets: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, and the Moon. The period from sunrise to sunset is divided into twelve hours, and sunset to the next sunrise into another twelve. Because daylight changes seasonally, these hours are usually unequal in clock time. Their rulers follow the repeating Chaldean order, while the first hour after sunrise shares the ruler of that weekday.

Astrological Meaning

In traditional and electional astrology, each planetary hour is thought to emphasize activities associated with its ruler. A Mercury hour may suit writing, study, trade, or communication; a Venus hour may support art, social connection, or reconciliation. Mars hours can favor decisive action, while Saturn hours may be chosen for disciplined, serious, or long-term work. Practitioners often strengthen an election by matching the hour ruler with the purpose of the activity and, when possible, with the planetary day. The planet’s condition in the relevant chart may also refine the interpretation.

Why It Matters

Planetary Hours offer a practical method for selecting timing without requiring an elaborate chart. They can help astrologers distinguish between moments that symbolically support different kinds of action. They do not guarantee outcomes, however; circumstances, preparation, and broader chart factors remain important. Used thoughtfully, the system adds a traditional layer of planetary symbolism to daily planning and ritual practice.

Related Encyclopedia Entries

• Traditional Astrology
• Electional Astrology
• Planetary Days
• Chaldean Order
• Astrological Terminology