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 Paris?

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

Paris · September 13, 2026 · Sunday

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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.

Current planetary hour

#24 Day/Night

Ruler of the day

Sun

Ruler of the night

Jupiter

Planning something? Pick an hour

Business & decisions

Knowledge & connection

Body & home

Start	Planet	End	Hour
23:54	Mars	00:50	5
00:50	Sun	01:47	6
01:47	Venus	02:43	7
02:43	Mercury	03:39	8
03:39	Moon	04:35	9
04:35	Saturn	05:31	10
05:31	Jupiter	06:27	11
06:27	Mars	07:24	12
07:24	Sun	08:27	1
08:27	Venus	09:31	2
09:31	Mercury	10:35	3
10:35	Moon	11:38	4
11:38	Saturn	12:42	5

Start	Planet	End	Hour
12:42	Jupiter	13:46	6
13:46	Mars	14:49	7
14:49	Sun	15:53	8
15:53	Venus	16:57	9
16:57	Mercury	18:00	10
18:00	Moon	19:04	11
19:04	Saturn	20:07	12
20:07	Jupiter	21:04	1
21:04	Mars	22:00	2
22:00	Sun	22:57	3
22:57	Venus	23:53	4
23:53	Mercury	00:50	5

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