What is a planetary hour?

A planetary hour is one twelfth of daylight (sunrise to sunset) or one twelfth of the night (sunset to the next sunrise). Each hour is associated with a planet from the seven classical planets in the Chaldean order.

How are planetary hours calculated?

Daylight is divided into 12 equal hours from sunrise to sunset, and night into 12 equal hours from sunset to the next sunrise. The ruler of each hour follows the Chaldean order: Saturn, Jupiter, Mars, Sun, Venus, Mercury, Moon. The first daylight hour is ruled by the planet of the weekday.

Which planet rules the current hour in New York?

Today the first daylight hour is ruled by Venus, and the first night hour by Mars. The hour currently in progress is ruled by Venus.

New York · December 30, 2027 · Thursday

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Planetary Hours

Planetary hours divide daylight and night into 12 equal parts each, with every hour ruled by a planet in the Chaldean order.

Planning something? Pick an hour

Business & decisions

Knowledge & connection

Body & home

Start	Planet	End	Hour
23:58	Mercury	01:12	7
01:12	Moon	02:25	8
02:25	Saturn	03:39	9
03:39	Jupiter	04:52	10
04:52	Mars	06:06	11
06:06	Sun	07:19	12
07:19	Venus	08:06	1
08:06	Mercury	08:52	2
08:52	Moon	09:39	3
09:39	Saturn	10:25	4
10:25	Jupiter	11:12	5
11:12	Mars	11:59	6
11:59	Sun	12:45	7

Start	Planet	End	Hour
12:45	Venus	13:32	8
13:32	Mercury	14:18	9
14:18	Moon	15:05	10
15:05	Saturn	15:51	11
15:51	Jupiter	16:38	12
16:38	Mars	17:51	1
17:51	Sun	19:05	2
19:05	Venus	20:18	3
20:18	Mercury	21:32	4
21:32	Moon	22:45	5
22:45	Saturn	23:59	6
23:59	Jupiter	01:12	7

The convenient view lists all hours of the day in order of start time — from midnight to midnight — making it easier to plan your schedule.

⚠️ Important note

Planetary hours are a tool for boosting effectiveness and harmonizing your activities, not a rigid dogma. If you urgently need to sign a document or see a doctor, don’t put it off just because of an «unsuitable» hour. Common sense, real circumstances and your personal responsibility always take priority over astrological recommendations.

How to pick an hour: 5 steps

Identify the sphere of your task — it points to the ruling planet.
Find the nearest hour of that planet in the table; a safe choice is Jupiter or Venus.
Day planets (Sun, Jupiter, Saturn) favor daytime; night planets (Moon, Venus, Mars) favor nighttime.
Time is strong when the hour’s planet is “friendly” with the day’s planet.
Check the Moon phase and hours marked with caution.

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What Are Planetary Hours Why the Day is Divided This Way: How Planetary Hours are Calculated What to plan in each planetary hour: time selection for tasks Open the lunar calendar