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, 19 September 2026: day of Saturn
- Sunrise
- 07:08
- Sunset
- 19:21
- Next sunrise
- 07:08
A day hour lasts 1h 01m; a night hour, 59 min. Local time (America/Chicago).
Day
- 1♄︎ Saturn07:08 – 08:09
- 2♃︎ Jupiter08:09 – 09:10
- 3♂︎ Mars09:10 – 10:11
- 4☉︎ Sun10:11 – 11:12
- 5♀︎ Venus11:12 – 12:13
- 6☿︎ Mercury12:13 – 13:14
- 7☽︎ Moon13:14 – 14:15
- 8♄︎ Saturn14:15 – 15:17
- 9♃︎ Jupiter15:17 – 16:18
- 10♂︎ Mars16:18 – 17:19
- 11☉︎ Sun17:19 – 18:20
- 12♀︎ Venus18:20 – 19:21
Night
- 1☿︎ Mercury19:21 – 20:20
- 2☽︎ Moon20:20 – 21:19
- 3♄︎ Saturn21:19 – 22:18
- 4♃︎ Jupiter22:18 – 23:17
- 5♂︎ Mars23:17 – 00:16
- 6☉︎ Sun00:16 – 01:15
- 7♀︎ Venus01:15 – 02:14
- 8☿︎ Mercury02:14 – 03:13
- 9☽︎ Moon03:13 – 04:11
- 10♄︎ Saturn04:11 – 05:10
- 11♃︎ Jupiter05:10 – 06:09
- 12♂︎ Mars06:09 – 07:08
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Saturday, 19 September 2026, the Sun rises at 07:08 and sets at 19:21: the day lasts 12h 13m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 07:08, lasts 11h 47m: twelve night hours of 59 min.
Which planet rules the first hour that day?
Saturn, from 07:08 to 08:09: 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.