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 Wednesday, 10 September 2025: day of Mercury
- Sunrise
- 07:48
- Sunset
- 20:40
- Next sunrise
- 07:49
A day hour lasts 1h 04m; a night hour, 56 min. Local time (Europe/Paris).
Day
- 1☿︎ Mercury07:48 – 08:52
- 2☽︎ Moon08:52 – 09:56
- 3♄︎ Saturn09:56 – 11:01
- 4♃︎ Jupiter11:01 – 12:05
- 5♂︎ Mars12:05 – 13:09
- 6☉︎ Sun13:09 – 14:14
- 7♀︎ Venus14:14 – 15:18
- 8☿︎ Mercury15:18 – 16:23
- 9☽︎ Moon16:23 – 17:27
- 10♄︎ Saturn17:27 – 18:31
- 11♃︎ Jupiter18:31 – 19:36
- 12♂︎ Mars19:36 – 20:40
Night
- 1☉︎ Sun20:40 – 21:36
- 2♀︎ Venus21:36 – 22:32
- 3☿︎ Mercury22:32 – 23:27
- 4☽︎ Moon23:27 – 00:23
- 5♄︎ Saturn00:23 – 01:19
- 6♃︎ Jupiter01:19 – 02:15
- 7♂︎ Mars02:15 – 03:10
- 8☉︎ Sun03:10 – 04:06
- 9♀︎ Venus04:06 – 05:02
- 10☿︎ Mercury05:02 – 05:57
- 11☽︎ Moon05:57 – 06:53
- 12♄︎ Saturn06:53 – 07:49
Other cities · France
Questions
How are the planetary hours calculated in Brest?
On Wednesday, 10 September 2025, the Sun rises at 07:48 and sets at 20:40: the day lasts 12h 53m, that is twelve day hours of 1h 04m. The night, until the next sunrise at 07:49, lasts 11h 09m: twelve night hours of 56 min.
Which planet rules the first hour that day?
Mercury, from 07:48 to 08:52: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.