Planetary hours
in Boulogne-Billancourt.
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 Thursday, 3 September 2026: day of Jupiter
- Sunrise
- 07:10
- Sunset
- 20:29
- Next sunrise
- 07:11
A day hour lasts 1h 07m; a night hour, 54 min. Local time (Europe/Paris).
Day
- 1♃︎ Jupiter07:10 – 08:17
- 2♂︎ Mars08:17 – 09:23
- 3☉︎ Sun09:23 – 10:30
- 4♀︎ Venus10:30 – 11:36
- 5☿︎ Mercury11:36 – 12:43
- 6☽︎ Moon12:43 – 13:49
- 7♄︎ Saturn13:49 – 14:56
- 8♃︎ Jupiter14:56 – 16:03
- 9♂︎ Mars16:03 – 17:09
- 10☉︎ Sun17:09 – 18:16
- 11♀︎ Venus18:16 – 19:22
- 12☿︎ Mercury19:22 – 20:29
Night
- 1☽︎ Moon20:29 – 21:22
- 2♄︎ Saturn21:22 – 22:16
- 3♃︎ Jupiter22:16 – 23:09
- 4♂︎ Mars23:09 – 00:03
- 5☉︎ Sun00:03 – 00:57
- 6♀︎ Venus00:57 – 01:50
- 7☿︎ Mercury01:50 – 02:44
- 8☽︎ Moon02:44 – 03:37
- 9♄︎ Saturn03:37 – 04:31
- 10♃︎ Jupiter04:31 – 05:24
- 11♂︎ Mars05:24 – 06:18
- 12☉︎ Sun06:18 – 07:11
Other cities · France
Questions
How are the planetary hours calculated in Boulogne-Billancourt?
On Thursday, 3 September 2026, the Sun rises at 07:10 and sets at 20:29: the day lasts 13h 19m, that is twelve day hours of 1h 07m. The night, until the next sunrise at 07:11, lasts 10h 43m: twelve night hours of 54 min.
Which planet rules the first hour that day?
Jupiter, from 07:10 to 08:17: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.