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 Sunday, 18 October 2026: day of the Sun
- Sunrise
- 07:25
- Sunset
- 18:47
- Next sunrise
- 07:25
A day hour lasts 57 min; a night hour, 1h 03m. Local time (America/Chicago).
Day
- 1☉︎ Sun07:25 – 08:22
- 2♀︎ Venus08:22 – 09:18
- 3☿︎ Mercury09:18 – 10:15
- 4☽︎ Moon10:15 – 11:12
- 5♄︎ Saturn11:12 – 12:09
- 6♃︎ Jupiter12:09 – 13:06
- 7♂︎ Mars13:06 – 14:03
- 8☉︎ Sun14:03 – 15:00
- 9♀︎ Venus15:00 – 15:56
- 10☿︎ Mercury15:56 – 16:53
- 11☽︎ Moon16:53 – 17:50
- 12♄︎ Saturn17:50 – 18:47
Night
- 1♃︎ Jupiter18:47 – 19:50
- 2♂︎ Mars19:50 – 20:53
- 3☉︎ Sun20:53 – 21:57
- 4♀︎ Venus21:57 – 23:00
- 5☿︎ Mercury23:00 – 00:03
- 6☽︎ Moon00:03 – 01:06
- 7♄︎ Saturn01:06 – 02:09
- 8♃︎ Jupiter02:09 – 03:13
- 9♂︎ Mars03:13 – 04:16
- 10☉︎ Sun04:16 – 05:19
- 11♀︎ Venus05:19 – 06:22
- 12☿︎ Mercury06:22 – 07:25
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Sunday, 18 October 2026, the Sun rises at 07:25 and sets at 18:47: the day lasts 11h 22m, that is twelve day hours of 57 min. The night, until the next sunrise at 07:25, lasts 12h 38m: twelve night hours of 1h 03m.
Which planet rules the first hour that day?
The Sun, from 07:25 to 08:22: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.