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, 16 December 2026: day of Mercury
- Sunrise
- 09:03
- Sunset
- 17:23
- Next sunrise
- 09:04
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Paris).
Day
- 1☿︎ Mercury09:03 – 09:45
- 2☽︎ Moon09:45 – 10:26
- 3♄︎ Saturn10:26 – 11:08
- 4♃︎ Jupiter11:08 – 11:50
- 5♂︎ Mars11:50 – 12:31
- 6☉︎ Sun12:31 – 13:13
- 7♀︎ Venus13:13 – 13:55
- 8☿︎ Mercury13:55 – 14:36
- 9☽︎ Moon14:36 – 15:18
- 10♄︎ Saturn15:18 – 16:00
- 11♃︎ Jupiter16:00 – 16:41
- 12♂︎ Mars16:41 – 17:23
Night
- 1☉︎ Sun17:23 – 18:42
- 2♀︎ Venus18:42 – 20:00
- 3☿︎ Mercury20:00 – 21:18
- 4☽︎ Moon21:18 – 22:37
- 5♄︎ Saturn22:37 – 23:55
- 6♃︎ Jupiter23:55 – 01:13
- 7♂︎ Mars01:13 – 02:32
- 8☉︎ Sun02:32 – 03:50
- 9♀︎ Venus03:50 – 05:08
- 10☿︎ Mercury05:08 – 06:27
- 11☽︎ Moon06:27 – 07:45
- 12♄︎ Saturn07:45 – 09:04
Other cities · France
Questions
How are the planetary hours calculated in Brest?
On Wednesday, 16 December 2026, the Sun rises at 09:03 and sets at 17:23: the day lasts 8h 20m, that is twelve day hours of 42 min. The night, until the next sunrise at 09:04, lasts 15h 40m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Mercury, from 09:03 to 09:45: 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.