How to Calculate Planetary Hours by Hand

How to Calculate Planetary Hours Planetary hours are not fixed 60-minute blocks. Instead, both daylight and nighttime are divided into twelve equal parts, whose length changes with the seasons. Here?s how to calculate them: 1. Find Sunrise and Sunset Look up the exact times of sunrise and sunset for your location on the day in question. Example: Sunrise at 6:20 AM, Sunset at 8:20 PM. 2. Divide Daylight into 12 Equal Parts Count the minutes between sunrise and sunset. Divide by 12. That number is the length of each daytime planetary hour. Example: 6:20 AM → 8:20 PM = 14 hours (840 minutes). 840 ? 12 = 70 minutes per planetary hour (daytime). 3. Divide Night into 12 Equal Parts Count the minutes between sunset and the next day?s sunrise. Divide by 12. That number is the length of each nighttime planetary hour. Example: 8:20 PM → 6:20 AM = 10 hours (600 minutes). 600 ? 12 = 50 minutes per planetary hour (nighttime). 4. Assign the Ruling Planet Each day of the week is ruled by a planet. The first hour after sunrise is always ruled by that planet. From there, follow the Chaldean Order: Saturn → Jupiter → Mars → Sun → Venus → Mercury → Moon → (repeat). Example: On Tuesday (Mars?s day), the first hour after sunrise belongs to Mars, the second to the Sun, the third to Venus, and so on until sunset. 5. Track the Cycle Into Night After sunset, continue the Chaldean Order with the new (shorter) nighttime hours, until sunrise begins a new cycle with the planet that rules that day. Quick Tips Day + Hour = Strong Alignment. Example: Venus day + Venus hour = powerful for love spells. Day + Different Planet?s Hour = Blended Influence. Example: Friday (Venus) + Mars hour = passion and sexual magnetism. Apps and charts can calculate automatically, but hand-calculating teaches rhythm and connection.

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