Planetary hours
in Brest.
The day, from sunrise to sunset, is cut into twelve equal hours; so is the night, from sunset to the next sunrise. Each hour carries a planet, in the Chaldean order. A planetary hour therefore lasts 60 minutes only at the equinoxes: it all depends on the date and the city. Here are the exact hours for your city; what you do with them is up to you.
Planetary day of Monday, 21 December 2026: day of the Moon
- Sunrise
- 09:06
- Sunset
- 17:25
- Next sunrise
- 09:07
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Paris).
Day
- 1☽︎ Moon09:06 – 09:48
- 2♄︎ Saturn09:48 – 10:29
- 3♃︎ Jupiter10:29 – 11:11
- 4♂︎ Mars11:11 – 11:52
- 5☉︎ Sun11:52 – 12:34
- 6♀︎ Venus12:34 – 13:16
- 7☿︎ Mercury13:16 – 13:57
- 8☽︎ Moon13:57 – 14:39
- 9♄︎ Saturn14:39 – 15:20
- 10♃︎ Jupiter15:20 – 16:02
- 11♂︎ Mars16:02 – 16:43
- 12☉︎ Sun16:43 – 17:25
Night
- 1♀︎ Venus17:25 – 18:43
- 2☿︎ Mercury18:43 – 20:02
- 3☽︎ Moon20:02 – 21:20
- 4♄︎ Saturn21:20 – 22:39
- 5♃︎ Jupiter22:39 – 23:57
- 6♂︎ Mars23:57 – 01:16
- 7☉︎ Sun01:16 – 02:34
- 8♀︎ Venus02:34 – 03:53
- 9☿︎ Mercury03:53 – 05:11
- 10☽︎ Moon05:11 – 06:30
- 11♄︎ Saturn06:30 – 07:48
- 12♃︎ Jupiter07:48 – 09:07
Other cities · France
Questions
How are the planetary hours calculated in Brest?
On Monday, 21 December 2026, the Sun rises at 09:06 and sets at 17:25: the day lasts 8h 19m, that is twelve day hours of 42 min. The night, until the next sunrise at 09:07, lasts 15h 42m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
The Moon, from 09:06 to 09:48: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon again.
Today’s sky, on YOUR chart
Planetary hours are the same for everyone in a city. Your chart is yours alone: every morning AstroXP crosses the real sky with your birth, to the minute, and tells you what time it plays out for you.
On a computer? Scan this code with your phone.
Calendars
Sunrise and sunset calculated for the city (the Sun’s centre 0°50′ below the horizon: refraction and semi-diameter), local time of the city’s time zone. Checked against astronomy-engine, the app’s engine.