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 Saturday, 27 December 2025: day of Saturn
- Sunrise
- 09:08
- Sunset
- 17:29
- Next sunrise
- 09:09
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Paris).
Day
- 1♄︎ Saturn09:08 – 09:50
- 2♃︎ Jupiter09:50 – 10:32
- 3♂︎ Mars10:32 – 11:14
- 4☉︎ Sun11:14 – 11:55
- 5♀︎ Venus11:55 – 12:37
- 6☿︎ Mercury12:37 – 13:19
- 7☽︎ Moon13:19 – 14:00
- 8♄︎ Saturn14:00 – 14:42
- 9♃︎ Jupiter14:42 – 15:24
- 10♂︎ Mars15:24 – 16:06
- 11☉︎ Sun16:06 – 16:47
- 12♀︎ Venus16:47 – 17:29
Night
- 1☿︎ Mercury17:29 – 18:47
- 2☽︎ Moon18:47 – 20:06
- 3♄︎ Saturn20:06 – 21:24
- 4♃︎ Jupiter21:24 – 22:42
- 5♂︎ Mars22:42 – 00:00
- 6☉︎ Sun00:00 – 01:19
- 7♀︎ Venus01:19 – 02:37
- 8☿︎ Mercury02:37 – 03:55
- 9☽︎ Moon03:55 – 05:14
- 10♄︎ Saturn05:14 – 06:32
- 11♃︎ Jupiter06:32 – 07:50
- 12♂︎ Mars07:50 – 09:09
Other cities · France
Questions
How are the planetary hours calculated in Brest?
On Saturday, 27 December 2025, the Sun rises at 09:08 and sets at 17:29: the day lasts 8h 21m, that is twelve day hours of 42 min. The night, until the next sunrise at 09:09, lasts 15h 40m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Saturn, from 09:08 to 09:50: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.