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, 30 September 2025: day of Mars
- Sunrise
- 07:14
- Sunset
- 19:07
- Next sunrise
- 07:14
A day hour lasts 59 min; a night hour, 1h 01m. Local time (America/Chicago).
Day
- 1♂︎ Mars07:14 – 08:13
- 2☉︎ Sun08:13 – 09:13
- 3♀︎ Venus09:13 – 10:12
- 4☿︎ Mercury10:12 – 11:12
- 5☽︎ Moon11:12 – 12:11
- 6♄︎ Saturn12:11 – 13:11
- 7♃︎ Jupiter13:11 – 14:10
- 8♂︎ Mars14:10 – 15:09
- 9☉︎ Sun15:09 – 16:09
- 10♀︎ Venus16:09 – 17:08
- 11☿︎ Mercury17:08 – 18:08
- 12☽︎ Moon18:08 – 19:07
Night
- 1♄︎ Saturn19:07 – 20:08
- 2♃︎ Jupiter20:08 – 21:08
- 3♂︎ Mars21:08 – 22:09
- 4☉︎ Sun22:09 – 23:10
- 5♀︎ Venus23:10 – 00:10
- 6☿︎ Mercury00:10 – 01:11
- 7☽︎ Moon01:11 – 02:11
- 8♄︎ Saturn02:11 – 03:12
- 9♃︎ Jupiter03:12 – 04:13
- 10♂︎ Mars04:13 – 05:13
- 11☉︎ Sun05:13 – 06:14
- 12♀︎ Venus06:14 – 07:14
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Tuesday, 30 September 2025, the Sun rises at 07:14 and sets at 19:07: the day lasts 11h 53m, that is twelve day hours of 59 min. The night, until the next sunrise at 07:14, lasts 12h 07m: twelve night hours of 1h 01m.
Which planet rules the first hour that day?
Mars, from 07:14 to 08:13: 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.