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, 19 August 2026: day of Mercury
- Sunrise
- 06:51
- Sunset
- 19:27
- Next sunrise
- 06:51
A day hour lasts 1h 03m; a night hour, 57 min. Local time (Africa/Dakar).
Day
- 1☿︎ Mercury06:51 – 07:54
- 2☽︎ Moon07:54 – 08:57
- 3♄︎ Saturn08:57 – 10:00
- 4♃︎ Jupiter10:00 – 11:03
- 5♂︎ Mars11:03 – 12:06
- 6☉︎ Sun12:06 – 13:09
- 7♀︎ Venus13:09 – 14:12
- 8☿︎ Mercury14:12 – 15:15
- 9☽︎ Moon15:15 – 16:18
- 10♄︎ Saturn16:18 – 17:21
- 11♃︎ Jupiter17:21 – 18:24
- 12♂︎ Mars18:24 – 19:27
Night
- 1☉︎ Sun19:27 – 20:24
- 2♀︎ Venus20:24 – 21:21
- 3☿︎ Mercury21:21 – 22:18
- 4☽︎ Moon22:18 – 23:15
- 5♄︎ Saturn23:15 – 00:12
- 6♃︎ Jupiter00:12 – 01:09
- 7♂︎ Mars01:09 – 02:06
- 8☉︎ Sun02:06 – 03:03
- 9♀︎ Venus03:03 – 04:00
- 10☿︎ Mercury04:00 – 04:57
- 11☽︎ Moon04:57 – 05:54
- 12♄︎ Saturn05:54 – 06:51
Other cities · Senegal
Questions
How are the planetary hours calculated in Saint-Louis?
On Wednesday, 19 August 2026, the Sun rises at 06:51 and sets at 19:27: the day lasts 12h 37m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 06:51, lasts 11h 24m: twelve night hours of 57 min.
Which planet rules the first hour that day?
Mercury, from 06:51 to 07:54: 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.