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 Sunday, 13 December 2026: day of the Sun
- Sunrise
- 09:00
- Sunset
- 17:23
- Next sunrise
- 09:01
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Paris).
Day
- 1☉︎ Sun09:00 – 09:42
- 2♀︎ Venus09:42 – 10:24
- 3☿︎ Mercury10:24 – 11:06
- 4☽︎ Moon11:06 – 11:48
- 5♄︎ Saturn11:48 – 12:30
- 6♃︎ Jupiter12:30 – 13:12
- 7♂︎ Mars13:12 – 13:53
- 8☉︎ Sun13:53 – 14:35
- 9♀︎ Venus14:35 – 15:17
- 10☿︎ Mercury15:17 – 15:59
- 11☽︎ Moon15:59 – 16:41
- 12♄︎ Saturn16:41 – 17:23
Night
- 1♃︎ Jupiter17:23 – 18:41
- 2♂︎ Mars18:41 – 19:59
- 3☉︎ Sun19:59 – 21:17
- 4♀︎ Venus21:17 – 22:36
- 5☿︎ Mercury22:36 – 23:54
- 6☽︎ Moon23:54 – 01:12
- 7♄︎ Saturn01:12 – 02:30
- 8♃︎ Jupiter02:30 – 03:48
- 9♂︎ Mars03:48 – 05:07
- 10☉︎ Sun05:07 – 06:25
- 11♀︎ Venus06:25 – 07:43
- 12☿︎ Mercury07:43 – 09:01
Other cities · France
Questions
How are the planetary hours calculated in Brest?
On Sunday, 13 December 2026, the Sun rises at 09:00 and sets at 17:23: the day lasts 8h 22m, that is twelve day hours of 42 min. The night, until the next sunrise at 09:01, lasts 15h 39m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
The Sun, from 09:00 to 09:42: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.