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, 13 January 2027: day of Mercury
- Sunrise
- 07:36
- Sunset
- 18:52
- Next sunrise
- 07:36
A day hour lasts 56 min; a night hour, 1h 04m. Local time (Africa/Dakar).
Day
- 1☿︎ Mercury07:36 – 08:33
- 2☽︎ Moon08:33 – 09:29
- 3♄︎ Saturn09:29 – 10:25
- 4♃︎ Jupiter10:25 – 11:21
- 5♂︎ Mars11:21 – 12:18
- 6☉︎ Sun12:18 – 13:14
- 7♀︎ Venus13:14 – 14:10
- 8☿︎ Mercury14:10 – 15:07
- 9☽︎ Moon15:07 – 16:03
- 10♄︎ Saturn16:03 – 16:59
- 11♃︎ Jupiter16:59 – 17:56
- 12♂︎ Mars17:56 – 18:52
Night
- 1☉︎ Sun18:52 – 19:56
- 2♀︎ Venus19:56 – 20:59
- 3☿︎ Mercury20:59 – 22:03
- 4☽︎ Moon22:03 – 23:07
- 5♄︎ Saturn23:07 – 00:11
- 6♃︎ Jupiter00:11 – 01:14
- 7♂︎ Mars01:14 – 02:18
- 8☉︎ Sun02:18 – 03:22
- 9♀︎ Venus03:22 – 04:25
- 10☿︎ Mercury04:25 – 05:29
- 11☽︎ Moon05:29 – 06:33
- 12♄︎ Saturn06:33 – 07:36
Other cities · Senegal
Questions
How are the planetary hours calculated in Saint-Louis?
On Wednesday, 13 January 2027, the Sun rises at 07:36 and sets at 18:52: the day lasts 11h 16m, that is twelve day hours of 56 min. The night, until the next sunrise at 07:36, lasts 12h 44m: twelve night hours of 1h 04m.
Which planet rules the first hour that day?
Mercury, from 07:36 to 08:33: 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.