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 Wednesday, 23 September 2026: day of Mercury
- Sunrise
- 07:10
- Sunset
- 19:16
- Next sunrise
- 07:10
A day hour lasts 1h 01m; a night hour, 1h 00m. Local time (America/Chicago).
Day
- 1☿︎ Mercury07:10 – 08:10
- 2☽︎ Moon08:10 – 09:11
- 3♄︎ Saturn09:11 – 10:11
- 4♃︎ Jupiter10:11 – 11:12
- 5♂︎ Mars11:12 – 12:12
- 6☉︎ Sun12:12 – 13:13
- 7♀︎ Venus13:13 – 14:13
- 8☿︎ Mercury14:13 – 15:14
- 9☽︎ Moon15:14 – 16:15
- 10♄︎ Saturn16:15 – 17:15
- 11♃︎ Jupiter17:15 – 18:16
- 12♂︎ Mars18:16 – 19:16
Night
- 1☉︎ Sun19:16 – 20:16
- 2♀︎ Venus20:16 – 21:15
- 3☿︎ Mercury21:15 – 22:15
- 4☽︎ Moon22:15 – 23:14
- 5♄︎ Saturn23:14 – 00:14
- 6♃︎ Jupiter00:14 – 01:13
- 7♂︎ Mars01:13 – 02:13
- 8☉︎ Sun02:13 – 03:12
- 9♀︎ Venus03:12 – 04:12
- 10☿︎ Mercury04:12 – 05:11
- 11☽︎ Moon05:11 – 06:11
- 12♄︎ Saturn06:11 – 07:10
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Wednesday, 23 September 2026, the Sun rises at 07:10 and sets at 19:16: the day lasts 12h 06m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 07:10, lasts 11h 54m: twelve night hours of 1h 00m.
Which planet rules the first hour that day?
Mercury, from 07:10 to 08:10: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.