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, 20 October 2026: day of Mars
- Sunrise
- 07:26
- Sunset
- 18:45
- Next sunrise
- 07:27
A day hour lasts 57 min; a night hour, 1h 03m. Local time (America/Chicago).
Day
- 1♂︎ Mars07:26 – 08:23
- 2☉︎ Sun08:23 – 09:19
- 3♀︎ Venus09:19 – 10:16
- 4☿︎ Mercury10:16 – 11:12
- 5☽︎ Moon11:12 – 12:09
- 6♄︎ Saturn12:09 – 13:05
- 7♃︎ Jupiter13:05 – 14:02
- 8♂︎ Mars14:02 – 14:59
- 9☉︎ Sun14:59 – 15:55
- 10♀︎ Venus15:55 – 16:52
- 11☿︎ Mercury16:52 – 17:48
- 12☽︎ Moon17:48 – 18:45
Night
- 1♄︎ Saturn18:45 – 19:48
- 2♃︎ Jupiter19:48 – 20:52
- 3♂︎ Mars20:52 – 21:55
- 4☉︎ Sun21:55 – 22:59
- 5♀︎ Venus22:59 – 00:02
- 6☿︎ Mercury00:02 – 01:06
- 7☽︎ Moon01:06 – 02:09
- 8♄︎ Saturn02:09 – 03:13
- 9♃︎ Jupiter03:13 – 04:16
- 10♂︎ Mars04:16 – 05:20
- 11☉︎ Sun05:20 – 06:23
- 12♀︎ Venus06:23 – 07:27
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Tuesday, 20 October 2026, the Sun rises at 07:26 and sets at 18:45: the day lasts 11h 19m, that is twelve day hours of 57 min. The night, until the next sunrise at 07:27, lasts 12h 42m: twelve night hours of 1h 03m.
Which planet rules the first hour that day?
Mars, from 07:26 to 08:23: 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.