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, 3 September 2025: day of Mercury
- Sunrise
- 07:38
- Sunset
- 20:55
- Next sunrise
- 07:39
A day hour lasts 1h 06m; a night hour, 54 min. Local time (Europe/Paris).
Day
- 1☿︎ Mercury07:38 – 08:44
- 2☽︎ Moon08:44 – 09:51
- 3♄︎ Saturn09:51 – 10:57
- 4♃︎ Jupiter10:57 – 12:03
- 5♂︎ Mars12:03 – 13:10
- 6☉︎ Sun13:10 – 14:16
- 7♀︎ Venus14:16 – 15:23
- 8☿︎ Mercury15:23 – 16:29
- 9☽︎ Moon16:29 – 17:35
- 10♄︎ Saturn17:35 – 18:42
- 11♃︎ Jupiter18:42 – 19:48
- 12♂︎ Mars19:48 – 20:55
Night
- 1☉︎ Sun20:55 – 21:48
- 2♀︎ Venus21:48 – 22:42
- 3☿︎ Mercury22:42 – 23:36
- 4☽︎ Moon23:36 – 00:30
- 5♄︎ Saturn00:30 – 01:23
- 6♃︎ Jupiter01:23 – 02:17
- 7♂︎ Mars02:17 – 03:11
- 8☉︎ Sun03:11 – 04:04
- 9♀︎ Venus04:04 – 04:58
- 10☿︎ Mercury04:58 – 05:52
- 11☽︎ Moon05:52 – 06:46
- 12♄︎ Saturn06:46 – 07:39
Other cities · France
Questions
How are the planetary hours calculated in Brest?
On Wednesday, 3 September 2025, the Sun rises at 07:38 and sets at 20:55: the day lasts 13h 17m, that is twelve day hours of 1h 06m. The night, until the next sunrise at 07:39, lasts 10h 45m: twelve night hours of 54 min.
Which planet rules the first hour that day?
Mercury, from 07:38 to 08:44: 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.