Planetary hours
in Ruiru.
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 Saturday, 3 October 2026: day of Saturn
- Sunrise
- 06:17
- Sunset
- 18:24
- Next sunrise
- 06:17
A day hour lasts 1h 01m; a night hour, 59 min. Local time (Africa/Nairobi).
Day
- 1♄︎ Saturn06:17 – 07:18
- 2♃︎ Jupiter07:18 – 08:18
- 3♂︎ Mars08:18 – 09:19
- 4☉︎ Sun09:19 – 10:20
- 5♀︎ Venus10:20 – 11:20
- 6☿︎ Mercury11:20 – 12:21
- 7☽︎ Moon12:21 – 13:21
- 8♄︎ Saturn13:21 – 14:22
- 9♃︎ Jupiter14:22 – 15:23
- 10♂︎ Mars15:23 – 16:23
- 11☉︎ Sun16:23 – 17:24
- 12♀︎ Venus17:24 – 18:24
Night
- 1☿︎ Mercury18:24 – 19:24
- 2☽︎ Moon19:24 – 20:23
- 3♄︎ Saturn20:23 – 21:22
- 4♃︎ Jupiter21:22 – 22:22
- 5♂︎ Mars22:22 – 23:21
- 6☉︎ Sun23:21 – 00:21
- 7♀︎ Venus00:21 – 01:20
- 8☿︎ Mercury01:20 – 02:19
- 9☽︎ Moon02:19 – 03:19
- 10♄︎ Saturn03:19 – 04:18
- 11♃︎ Jupiter04:18 – 05:17
- 12♂︎ Mars05:17 – 06:17
Questions
How are the planetary hours calculated in Ruiru?
On Saturday, 3 October 2026, the Sun rises at 06:17 and sets at 18:24: the day lasts 12h 07m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 06:17, lasts 11h 52m: twelve night hours of 59 min.
Which planet rules the first hour that day?
Saturn, from 06:17 to 07:18: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.