Resources / Planetary hours
Planetary Hours Calculator
This calculator uses the traditional unequal-hour model: daylight is divided into twelve planetary hours from sunrise to sunset, and night is divided into twelve planetary hours from sunset to next sunrise.
The sunrise and sunset values are calculated locally with a solar approximation. Activity notes are traditional correspondences, not scientific claims of causation.
Current planetary hour
Hour of Mars
Starts3:58 PM
Ends6:55 PM
Remaining20 min
Day rulerMoon
Force, courage, conflict, cutting away, heat, and decisive action.
Best upcoming daylight Jupiter hours
Hour 3
10:44 AM - 9:47 AM
Hour 10
4:02 AM - 3:05 AM
Learn the system
How planetary hours are calculated
The traditional system divides the time from sunrise to sunset into twelve unequal daylight hours, then divides sunset to the next sunrise into twelve unequal nighttime hours. The ruler of the weekday begins the first daylight hour, and the remaining hours follow the Chaldean planetary order.