Planetary hours
in Houston.
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, 11 October 2025: day of Saturn
- Sunrise
- 07:20
- Sunset
- 18:54
- Next sunrise
- 07:21
A day hour lasts 58 min; a night hour, 1h 02m. Local time (America/Chicago).
Day
- 1♄︎ Saturn07:20 – 08:18
- 2♃︎ Jupiter08:18 – 09:16
- 3♂︎ Mars09:16 – 10:14
- 4☉︎ Sun10:14 – 11:12
- 5♀︎ Venus11:12 – 12:09
- 6☿︎ Mercury12:09 – 13:07
- 7☽︎ Moon13:07 – 14:05
- 8♄︎ Saturn14:05 – 15:03
- 9♃︎ Jupiter15:03 – 16:01
- 10♂︎ Mars16:01 – 16:59
- 11☉︎ Sun16:59 – 17:56
- 12♀︎ Venus17:56 – 18:54
Night
- 1☿︎ Mercury18:54 – 19:57
- 2☽︎ Moon19:57 – 20:59
- 3♄︎ Saturn20:59 – 22:01
- 4♃︎ Jupiter22:01 – 23:03
- 5♂︎ Mars23:03 – 00:05
- 6☉︎ Sun00:05 – 01:08
- 7♀︎ Venus01:08 – 02:10
- 8☿︎ Mercury02:10 – 03:12
- 9☽︎ Moon03:12 – 04:14
- 10♄︎ Saturn04:14 – 05:17
- 11♃︎ Jupiter05:17 – 06:19
- 12♂︎ Mars06:19 – 07:21
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Saturday, 11 October 2025, the Sun rises at 07:20 and sets at 18:54: the day lasts 11h 34m, that is twelve day hours of 58 min. The night, until the next sunrise at 07:21, lasts 12h 27m: twelve night hours of 1h 02m.
Which planet rules the first hour that day?
Saturn, from 07:20 to 08:18: 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.