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 Tuesday, 15 December 2026: day of Mars
- Sunrise
- 09:02
- Sunset
- 17:23
- Next sunrise
- 09:03
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Paris).
Day
- 1♂︎ Mars09:02 – 09:44
- 2☉︎ Sun09:44 – 10:26
- 3♀︎ Venus10:26 – 11:07
- 4☿︎ Mercury11:07 – 11:49
- 5☽︎ Moon11:49 – 12:31
- 6♄︎ Saturn12:31 – 13:13
- 7♃︎ Jupiter13:13 – 13:54
- 8♂︎ Mars13:54 – 14:36
- 9☉︎ Sun14:36 – 15:18
- 10♀︎ Venus15:18 – 15:59
- 11☿︎ Mercury15:59 – 16:41
- 12☽︎ Moon16:41 – 17:23
Night
- 1♄︎ Saturn17:23 – 18:41
- 2♃︎ Jupiter18:41 – 20:00
- 3♂︎ Mars20:00 – 21:18
- 4☉︎ Sun21:18 – 22:36
- 5♀︎ Venus22:36 – 23:55
- 6☿︎ Mercury23:55 – 01:13
- 7☽︎ Moon01:13 – 02:31
- 8♄︎ Saturn02:31 – 03:50
- 9♃︎ Jupiter03:50 – 05:08
- 10♂︎ Mars05:08 – 06:26
- 11☉︎ Sun06:26 – 07:45
- 12♀︎ Venus07:45 – 09:03
Other cities · France
Questions
How are the planetary hours calculated in Brest?
On Tuesday, 15 December 2026, the Sun rises at 09:02 and sets at 17:23: the day lasts 8h 21m, that is twelve day hours of 42 min. The night, until the next sunrise at 09:03, lasts 15h 40m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Mars, from 09:02 to 09:44: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.