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, 1 September 2026: day of Mars
- Sunrise
- 06:58
- Sunset
- 19:43
- Next sunrise
- 06:59
A day hour lasts 1h 04m; a night hour, 56 min. Local time (America/Chicago).
Day
- 1♂︎ Mars06:58 – 08:02
- 2☉︎ Sun08:02 – 09:06
- 3♀︎ Venus09:06 – 10:09
- 4☿︎ Mercury10:09 – 11:13
- 5☽︎ Moon11:13 – 12:17
- 6♄︎ Saturn12:17 – 13:21
- 7♃︎ Jupiter13:21 – 14:24
- 8♂︎ Mars14:24 – 15:28
- 9☉︎ Sun15:28 – 16:32
- 10♀︎ Venus16:32 – 17:36
- 11☿︎ Mercury17:36 – 18:39
- 12☽︎ Moon18:39 – 19:43
Night
- 1♄︎ Saturn19:43 – 20:39
- 2♃︎ Jupiter20:39 – 21:36
- 3♂︎ Mars21:36 – 22:32
- 4☉︎ Sun22:32 – 23:28
- 5♀︎ Venus23:28 – 00:25
- 6☿︎ Mercury00:25 – 01:21
- 7☽︎ Moon01:21 – 02:17
- 8♄︎ Saturn02:17 – 03:14
- 9♃︎ Jupiter03:14 – 04:10
- 10♂︎ Mars04:10 – 05:06
- 11☉︎ Sun05:06 – 06:02
- 12♀︎ Venus06:02 – 06:59
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Tuesday, 1 September 2026, the Sun rises at 06:58 and sets at 19:43: the day lasts 12h 45m, that is twelve day hours of 1h 04m. The night, until the next sunrise at 06:59, lasts 11h 16m: twelve night hours of 56 min.
Which planet rules the first hour that day?
Mars, from 06:58 to 08:02: 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.