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, 17 October 2026: day of Saturn
- Sunrise
- 07:24
- Sunset
- 18:48
- Next sunrise
- 07:25
A day hour lasts 57 min; a night hour, 1h 03m. Local time (America/Chicago).
Day
- 1♄︎ Saturn07:24 – 08:21
- 2♃︎ Jupiter08:21 – 09:18
- 3♂︎ Mars09:18 – 10:15
- 4☉︎ Sun10:15 – 11:12
- 5♀︎ Venus11:12 – 12:09
- 6☿︎ Mercury12:09 – 13:06
- 7☽︎ Moon13:06 – 14:03
- 8♄︎ Saturn14:03 – 15:00
- 9♃︎ Jupiter15:00 – 15:57
- 10♂︎ Mars15:57 – 16:54
- 11☉︎ Sun16:54 – 17:51
- 12♀︎ Venus17:51 – 18:48
Night
- 1☿︎ Mercury18:48 – 19:51
- 2☽︎ Moon19:51 – 20:54
- 3♄︎ Saturn20:54 – 21:57
- 4♃︎ Jupiter21:57 – 23:00
- 5♂︎ Mars23:00 – 00:03
- 6☉︎ Sun00:03 – 01:06
- 7♀︎ Venus01:06 – 02:09
- 8☿︎ Mercury02:09 – 03:12
- 9☽︎ Moon03:12 – 04:16
- 10♄︎ Saturn04:16 – 05:19
- 11♃︎ Jupiter05:19 – 06:22
- 12♂︎ Mars06:22 – 07:25
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Saturday, 17 October 2026, the Sun rises at 07:24 and sets at 18:48: the day lasts 11h 24m, that is twelve day hours of 57 min. The night, until the next sunrise at 07:25, lasts 12h 37m: twelve night hours of 1h 03m.
Which planet rules the first hour that day?
Saturn, from 07:24 to 08:21: 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.