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 Tuesday, 15 December 2026: day of Mars
- Sunrise
- 07:25
- Sunset
- 18:36
- Next sunrise
- 07:26
A day hour lasts 56 min; a night hour, 1h 04m. Local time (Africa/Dakar).
Day
- 1♂︎ Mars07:25 – 08:21
- 2☉︎ Sun08:21 – 09:17
- 3♀︎ Venus09:17 – 10:13
- 4☿︎ Mercury10:13 – 11:09
- 5☽︎ Moon11:09 – 12:05
- 6♄︎ Saturn12:05 – 13:01
- 7♃︎ Jupiter13:01 – 13:57
- 8♂︎ Mars13:57 – 14:52
- 9☉︎ Sun14:52 – 15:48
- 10♀︎ Venus15:48 – 16:44
- 11☿︎ Mercury16:44 – 17:40
- 12☽︎ Moon17:40 – 18:36
Night
- 1♄︎ Saturn18:36 – 19:40
- 2♃︎ Jupiter19:40 – 20:44
- 3♂︎ Mars20:44 – 21:48
- 4☉︎ Sun21:48 – 22:53
- 5♀︎ Venus22:53 – 23:57
- 6☿︎ Mercury23:57 – 01:01
- 7☽︎ Moon01:01 – 02:05
- 8♄︎ Saturn02:05 – 03:09
- 9♃︎ Jupiter03:09 – 04:13
- 10♂︎ Mars04:13 – 05:17
- 11☉︎ Sun05:17 – 06:21
- 12♀︎ Venus06:21 – 07:26
Other cities · Senegal
Questions
How are the planetary hours calculated in Saint-Louis?
On Tuesday, 15 December 2026, the Sun rises at 07:25 and sets at 18:36: the day lasts 11h 11m, that is twelve day hours of 56 min. The night, until the next sunrise at 07:26, lasts 12h 49m: twelve night hours of 1h 04m.
Which planet rules the first hour that day?
Mars, from 07:25 to 08:21: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.