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 July 2025: day of Jupiter
- Sunrise
- 06:34
- Sunset
- 22:12
- Next sunrise
- 06:35
A day hour lasts 1h 18m; a night hour, 42 min. Local time (Europe/Paris).
Day
- 1♃︎ Jupiter06:34 – 07:53
- 2♂︎ Mars07:53 – 09:11
- 3☉︎ Sun09:11 – 10:29
- 4♀︎ Venus10:29 – 11:47
- 5☿︎ Mercury11:47 – 13:05
- 6☽︎ Moon13:05 – 14:23
- 7♄︎ Saturn14:23 – 15:42
- 8♃︎ Jupiter15:42 – 17:00
- 9♂︎ Mars17:00 – 18:18
- 10☉︎ Sun18:18 – 19:36
- 11♀︎ Venus19:36 – 20:54
- 12☿︎ Mercury20:54 – 22:12
Night
- 1☽︎ Moon22:12 – 22:54
- 2♄︎ Saturn22:54 – 23:36
- 3♃︎ Jupiter23:36 – 00:18
- 4♂︎ Mars00:18 – 01:00
- 5☉︎ Sun01:00 – 01:42
- 6♀︎ Venus01:42 – 02:24
- 7☿︎ Mercury02:24 – 03:06
- 8☽︎ Moon03:06 – 03:48
- 9♄︎ Saturn03:48 – 04:30
- 10♃︎ Jupiter04:30 – 05:12
- 11♂︎ Mars05:12 – 05:54
- 12☉︎ Sun05:54 – 06:35
Other cities · France
Questions
How are the planetary hours calculated in Brest?
On Thursday, 17 July 2025, the Sun rises at 06:34 and sets at 22:12: the day lasts 15h 38m, that is twelve day hours of 1h 18m. The night, until the next sunrise at 06:35, lasts 8h 23m: twelve night hours of 42 min.
Which planet rules the first hour that day?
Jupiter, from 06:34 to 07:53: 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.