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, 16 September 2026: day of Mercury
- Sunrise
- 07:06
- Sunset
- 19:25
- Next sunrise
- 07:07
A day hour lasts 1h 02m; a night hour, 58 min. Local time (America/Chicago).
Day
- 1☿︎ Mercury07:06 – 08:08
- 2☽︎ Moon08:08 – 09:09
- 3♄︎ Saturn09:09 – 10:11
- 4♃︎ Jupiter10:11 – 11:12
- 5♂︎ Mars11:12 – 12:14
- 6☉︎ Sun12:14 – 13:15
- 7♀︎ Venus13:15 – 14:17
- 8☿︎ Mercury14:17 – 15:19
- 9☽︎ Moon15:19 – 16:20
- 10♄︎ Saturn16:20 – 17:22
- 11♃︎ Jupiter17:22 – 18:23
- 12♂︎ Mars18:23 – 19:25
Night
- 1☉︎ Sun19:25 – 20:23
- 2♀︎ Venus20:23 – 21:22
- 3☿︎ Mercury21:22 – 22:20
- 4☽︎ Moon22:20 – 23:19
- 5♄︎ Saturn23:19 – 00:17
- 6♃︎ Jupiter00:17 – 01:16
- 7♂︎ Mars01:16 – 02:14
- 8☉︎ Sun02:14 – 03:13
- 9♀︎ Venus03:13 – 04:11
- 10☿︎ Mercury04:11 – 05:10
- 11☽︎ Moon05:10 – 06:08
- 12♄︎ Saturn06:08 – 07:07
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Wednesday, 16 September 2026, the Sun rises at 07:06 and sets at 19:25: the day lasts 12h 19m, that is twelve day hours of 1h 02m. The night, until the next sunrise at 07:07, lasts 11h 42m: twelve night hours of 58 min.
Which planet rules the first hour that day?
Mercury, from 07:06 to 08:08: 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.