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, 29 December 2025: day of the Moon
- Sunrise
- 09:09
- Sunset
- 17:31
- Next sunrise
- 09:09
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Paris).
Day
- 1☽︎ Moon09:09 – 09:51
- 2♄︎ Saturn09:51 – 10:32
- 3♃︎ Jupiter10:32 – 11:14
- 4♂︎ Mars11:14 – 11:56
- 5☉︎ Sun11:56 – 12:38
- 6♀︎ Venus12:38 – 13:20
- 7☿︎ Mercury13:20 – 14:01
- 8☽︎ Moon14:01 – 14:43
- 9♄︎ Saturn14:43 – 15:25
- 10♃︎ Jupiter15:25 – 16:07
- 11♂︎ Mars16:07 – 16:49
- 12☉︎ Sun16:49 – 17:31
Night
- 1♀︎ Venus17:31 – 18:49
- 2☿︎ Mercury18:49 – 20:07
- 3☽︎ Moon20:07 – 21:25
- 4♄︎ Saturn21:25 – 22:43
- 5♃︎ Jupiter22:43 – 00:02
- 6♂︎ Mars00:02 – 01:20
- 7☉︎ Sun01:20 – 02:38
- 8♀︎ Venus02:38 – 03:56
- 9☿︎ Mercury03:56 – 05:14
- 10☽︎ Moon05:14 – 06:32
- 11♄︎ Saturn06:32 – 07:51
- 12♃︎ Jupiter07:51 – 09:09
Other cities · France
Questions
How are the planetary hours calculated in Brest?
On Monday, 29 December 2025, the Sun rises at 09:09 and sets at 17:31: the day lasts 8h 22m, that is twelve day hours of 42 min. The night, until the next sunrise at 09:09, lasts 15h 38m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
The Moon, from 09:09 to 09:51: 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.