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 Friday, 18 December 2026: day of Venus
- Sunrise
- 09:04
- Sunset
- 17:24
- Next sunrise
- 09:05
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Paris).
Day
- 1♀︎ Venus09:04 – 09:46
- 2☿︎ Mercury09:46 – 10:28
- 3☽︎ Moon10:28 – 11:09
- 4♄︎ Saturn11:09 – 11:51
- 5♃︎ Jupiter11:51 – 12:32
- 6♂︎ Mars12:32 – 13:14
- 7☉︎ Sun13:14 – 13:56
- 8♀︎ Venus13:56 – 14:37
- 9☿︎ Mercury14:37 – 15:19
- 10☽︎ Moon15:19 – 16:00
- 11♄︎ Saturn16:00 – 16:42
- 12♃︎ Jupiter16:42 – 17:24
Night
- 1♂︎ Mars17:24 – 18:42
- 2☉︎ Sun18:42 – 20:01
- 3♀︎ Venus20:01 – 21:19
- 4☿︎ Mercury21:19 – 22:37
- 5☽︎ Moon22:37 – 23:56
- 6♄︎ Saturn23:56 – 01:14
- 7♃︎ Jupiter01:14 – 02:33
- 8♂︎ Mars02:33 – 03:51
- 9☉︎ Sun03:51 – 05:10
- 10♀︎ Venus05:10 – 06:28
- 11☿︎ Mercury06:28 – 07:46
- 12☽︎ Moon07:46 – 09:05
Other cities · France
Questions
How are the planetary hours calculated in Brest?
On Friday, 18 December 2026, the Sun rises at 09:04 and sets at 17:24: the day lasts 8h 19m, that is twelve day hours of 42 min. The night, until the next sunrise at 09:05, lasts 15h 41m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Venus, from 09:04 to 09:46: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.