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, 15 March 2025: day of Saturn
- Sunrise
- 07:30
- Sunset
- 19:30
- Next sunrise
- 07:29
A day hour lasts 1h 00m; a night hour, 1h 00m. Local time (America/Chicago).
Day
- 1♄︎ Saturn07:30 – 08:30
- 2♃︎ Jupiter08:30 – 09:30
- 3♂︎ Mars09:30 – 10:30
- 4☉︎ Sun10:30 – 11:30
- 5♀︎ Venus11:30 – 12:30
- 6☿︎ Mercury12:30 – 13:30
- 7☽︎ Moon13:30 – 14:30
- 8♄︎ Saturn14:30 – 15:30
- 9♃︎ Jupiter15:30 – 16:30
- 10♂︎ Mars16:30 – 17:30
- 11☉︎ Sun17:30 – 18:30
- 12♀︎ Venus18:30 – 19:30
Night
- 1☿︎ Mercury19:30 – 20:30
- 2☽︎ Moon20:30 – 21:29
- 3♄︎ Saturn21:29 – 22:29
- 4♃︎ Jupiter22:29 – 23:29
- 5♂︎ Mars23:29 – 00:29
- 6☉︎ Sun00:29 – 01:29
- 7♀︎ Venus01:29 – 02:29
- 8☿︎ Mercury02:29 – 03:29
- 9☽︎ Moon03:29 – 04:29
- 10♄︎ Saturn04:29 – 05:29
- 11♃︎ Jupiter05:29 – 06:29
- 12♂︎ Mars06:29 – 07:29
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Saturday, 15 March 2025, the Sun rises at 07:30 and sets at 19:30: the day lasts 11h 59m, that is twelve day hours of 1h 00m. The night, until the next sunrise at 07:29, lasts 12h 00m: twelve night hours of 1h 00m.
Which planet rules the first hour that day?
Saturn, from 07:30 to 08:30: 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.