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, 18 October 2025: day of Saturn
- Sunrise
- 08:42
- Sunset
- 19:22
- Next sunrise
- 08:43
A day hour lasts 53 min; a night hour, 1h 07m. Local time (Europe/Paris).
Day
- 1♄︎ Saturn08:42 – 09:35
- 2♃︎ Jupiter09:35 – 10:29
- 3♂︎ Mars10:29 – 11:22
- 4☉︎ Sun11:22 – 12:15
- 5♀︎ Venus12:15 – 13:09
- 6☿︎ Mercury13:09 – 14:02
- 7☽︎ Moon14:02 – 14:56
- 8♄︎ Saturn14:56 – 15:49
- 9♃︎ Jupiter15:49 – 16:42
- 10♂︎ Mars16:42 – 17:36
- 11☉︎ Sun17:36 – 18:29
- 12♀︎ Venus18:29 – 19:22
Night
- 1☿︎ Mercury19:22 – 20:29
- 2☽︎ Moon20:29 – 21:36
- 3♄︎ Saturn21:36 – 22:43
- 4♃︎ Jupiter22:43 – 23:49
- 5♂︎ Mars23:49 – 00:56
- 6☉︎ Sun00:56 – 02:03
- 7♀︎ Venus02:03 – 03:10
- 8☿︎ Mercury03:10 – 04:16
- 9☽︎ Moon04:16 – 05:23
- 10♄︎ Saturn05:23 – 06:30
- 11♃︎ Jupiter06:30 – 07:37
- 12♂︎ Mars07:37 – 08:43
Other cities · France
Questions
How are the planetary hours calculated in Brest?
On Saturday, 18 October 2025, the Sun rises at 08:42 and sets at 19:22: the day lasts 10h 40m, that is twelve day hours of 53 min. The night, until the next sunrise at 08:43, lasts 13h 21m: twelve night hours of 1h 07m.
Which planet rules the first hour that day?
Saturn, from 08:42 to 09:35: 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.