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, 12 May 2026: day of Mars
- Sunrise
- 06:30
- Sunset
- 20:05
- Next sunrise
- 06:29
A day hour lasts 1h 08m; a night hour, 52 min. Local time (America/Chicago).
Day
- 1♂︎ Mars06:30 – 07:38
- 2☉︎ Sun07:38 – 08:46
- 3♀︎ Venus08:46 – 09:54
- 4☿︎ Mercury09:54 – 11:02
- 5☽︎ Moon11:02 – 12:10
- 6♄︎ Saturn12:10 – 13:17
- 7♃︎ Jupiter13:17 – 14:25
- 8♂︎ Mars14:25 – 15:33
- 9☉︎ Sun15:33 – 16:41
- 10♀︎ Venus16:41 – 17:49
- 11☿︎ Mercury17:49 – 18:57
- 12☽︎ Moon18:57 – 20:05
Night
- 1♄︎ Saturn20:05 – 20:57
- 2♃︎ Jupiter20:57 – 21:49
- 3♂︎ Mars21:49 – 22:41
- 4☉︎ Sun22:41 – 23:33
- 5♀︎ Venus23:33 – 00:25
- 6☿︎ Mercury00:25 – 01:17
- 7☽︎ Moon01:17 – 02:09
- 8♄︎ Saturn02:09 – 03:01
- 9♃︎ Jupiter03:01 – 03:53
- 10♂︎ Mars03:53 – 04:45
- 11☉︎ Sun04:45 – 05:37
- 12♀︎ Venus05:37 – 06:29
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Tuesday, 12 May 2026, the Sun rises at 06:30 and sets at 20:05: the day lasts 13h 35m, that is twelve day hours of 1h 08m. The night, until the next sunrise at 06:29, lasts 10h 24m: twelve night hours of 52 min.
Which planet rules the first hour that day?
Mars, from 06:30 to 07:38: 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.