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 Wednesday, 23 December 2026: day of Mercury
- Sunrise
- 07:29
- Sunset
- 18:40
- Next sunrise
- 07:30
A day hour lasts 56 min; a night hour, 1h 04m. Local time (Africa/Dakar).
Day
- 1☿︎ Mercury07:29 – 08:25
- 2☽︎ Moon08:25 – 09:21
- 3♄︎ Saturn09:21 – 10:17
- 4♃︎ Jupiter10:17 – 11:13
- 5♂︎ Mars11:13 – 12:09
- 6☉︎ Sun12:09 – 13:05
- 7♀︎ Venus13:05 – 14:00
- 8☿︎ Mercury14:00 – 14:56
- 9☽︎ Moon14:56 – 15:52
- 10♄︎ Saturn15:52 – 16:48
- 11♃︎ Jupiter16:48 – 17:44
- 12♂︎ Mars17:44 – 18:40
Night
- 1☉︎ Sun18:40 – 19:44
- 2♀︎ Venus19:44 – 20:48
- 3☿︎ Mercury20:48 – 21:52
- 4☽︎ Moon21:52 – 22:56
- 5♄︎ Saturn22:56 – 00:01
- 6♃︎ Jupiter00:01 – 01:05
- 7♂︎ Mars01:05 – 02:09
- 8☉︎ Sun02:09 – 03:13
- 9♀︎ Venus03:13 – 04:17
- 10☿︎ Mercury04:17 – 05:21
- 11☽︎ Moon05:21 – 06:26
- 12♄︎ Saturn06:26 – 07:30
Other cities · Senegal
Questions
How are the planetary hours calculated in Saint-Louis?
On Wednesday, 23 December 2026, the Sun rises at 07:29 and sets at 18:40: the day lasts 11h 11m, that is twelve day hours of 56 min. The night, until the next sunrise at 07:30, lasts 12h 50m: twelve night hours of 1h 04m.
Which planet rules the first hour that day?
Mercury, from 07:29 to 08:25: 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.