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 Tuesday, 22 September 2026: day of Mars
- Sunrise
- 07:09
- Sunset
- 19:17
- Next sunrise
- 07:10
A day hour lasts 1h 01m; a night hour, 59 min. Local time (America/Chicago).
Day
- 1♂︎ Mars07:09 – 08:10
- 2☉︎ Sun08:10 – 09:11
- 3♀︎ Venus09:11 – 10:11
- 4☿︎ Mercury10:11 – 11:12
- 5☽︎ Moon11:12 – 12:13
- 6♄︎ Saturn12:13 – 13:13
- 7♃︎ Jupiter13:13 – 14:14
- 8♂︎ Mars14:14 – 15:15
- 9☉︎ Sun15:15 – 16:15
- 10♀︎ Venus16:15 – 17:16
- 11☿︎ Mercury17:16 – 18:17
- 12☽︎ Moon18:17 – 19:17
Night
- 1♄︎ Saturn19:17 – 20:17
- 2♃︎ Jupiter20:17 – 21:16
- 3♂︎ Mars21:16 – 22:15
- 4☉︎ Sun22:15 – 23:15
- 5♀︎ Venus23:15 – 00:14
- 6☿︎ Mercury00:14 – 01:14
- 7☽︎ Moon01:14 – 02:13
- 8♄︎ Saturn02:13 – 03:12
- 9♃︎ Jupiter03:12 – 04:12
- 10♂︎ Mars04:12 – 05:11
- 11☉︎ Sun05:11 – 06:11
- 12♀︎ Venus06:11 – 07:10
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Tuesday, 22 September 2026, the Sun rises at 07:09 and sets at 19:17: the day lasts 12h 08m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 07:10, lasts 11h 53m: twelve night hours of 59 min.
Which planet rules the first hour that day?
Mars, from 07:09 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 Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.