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 Thursday, 17 September 2026: day of Jupiter
- Sunrise
- 07:57
- Sunset
- 20:26
- Next sunrise
- 07:58
A day hour lasts 1h 02m; a night hour, 58 min. Local time (Europe/Paris).
Day
- 1♃︎ Jupiter07:57 – 08:59
- 2♂︎ Mars08:59 – 10:02
- 3☉︎ Sun10:02 – 11:04
- 4♀︎ Venus11:04 – 12:07
- 5☿︎ Mercury12:07 – 13:09
- 6☽︎ Moon13:09 – 14:11
- 7♄︎ Saturn14:11 – 15:14
- 8♃︎ Jupiter15:14 – 16:16
- 9♂︎ Mars16:16 – 17:19
- 10☉︎ Sun17:19 – 18:21
- 11♀︎ Venus18:21 – 19:24
- 12☿︎ Mercury19:24 – 20:26
Night
- 1☽︎ Moon20:26 – 21:24
- 2♄︎ Saturn21:24 – 22:21
- 3♃︎ Jupiter22:21 – 23:19
- 4♂︎ Mars23:19 – 00:17
- 5☉︎ Sun00:17 – 01:14
- 6♀︎ Venus01:14 – 02:12
- 7☿︎ Mercury02:12 – 03:10
- 8☽︎ Moon03:10 – 04:08
- 9♄︎ Saturn04:08 – 05:05
- 10♃︎ Jupiter05:05 – 06:03
- 11♂︎ Mars06:03 – 07:01
- 12☉︎ Sun07:01 – 07:58
Other cities · France
Questions
How are the planetary hours calculated in Brest?
On Thursday, 17 September 2026, the Sun rises at 07:57 and sets at 20:26: the day lasts 12h 29m, that is twelve day hours of 1h 02m. The night, until the next sunrise at 07:58, lasts 11h 32m: twelve night hours of 58 min.
Which planet rules the first hour that day?
Jupiter, from 07:57 to 08:59: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.