Planetary hours
in Saint-Louis.
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, 17 December 2026: day of Jupiter
- Sunrise
- 07:26
- Sunset
- 18:37
- Next sunrise
- 07:27
A day hour lasts 56 min; a night hour, 1h 04m. Local time (Africa/Dakar).
Day
- 1♃︎ Jupiter07:26 – 08:22
- 2♂︎ Mars08:22 – 09:18
- 3☉︎ Sun09:18 – 10:14
- 4♀︎ Venus10:14 – 11:10
- 5☿︎ Mercury11:10 – 12:06
- 6☽︎ Moon12:06 – 13:02
- 7♄︎ Saturn13:02 – 13:57
- 8♃︎ Jupiter13:57 – 14:53
- 9♂︎ Mars14:53 – 15:49
- 10☉︎ Sun15:49 – 16:45
- 11♀︎ Venus16:45 – 17:41
- 12☿︎ Mercury17:41 – 18:37
Night
- 1☽︎ Moon18:37 – 19:41
- 2♄︎ Saturn19:41 – 20:45
- 3♃︎ Jupiter20:45 – 21:49
- 4♂︎ Mars21:49 – 22:54
- 5☉︎ Sun22:54 – 23:58
- 6♀︎ Venus23:58 – 01:02
- 7☿︎ Mercury01:02 – 02:06
- 8☽︎ Moon02:06 – 03:10
- 9♄︎ Saturn03:10 – 04:14
- 10♃︎ Jupiter04:14 – 05:18
- 11♂︎ Mars05:18 – 06:23
- 12☉︎ Sun06:23 – 07:27
Other cities · Senegal
Questions
How are the planetary hours calculated in Saint-Louis?
On Thursday, 17 December 2026, the Sun rises at 07:26 and sets at 18:37: the day lasts 11h 11m, that is twelve day hours of 56 min. The night, until the next sunrise at 07:27, lasts 12h 50m: twelve night hours of 1h 04m.
Which planet rules the first hour that day?
Jupiter, from 07:26 to 08:22: 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.