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 January 2027: day of Mars
- Sunrise
- 07:17
- Sunset
- 17:41
- Next sunrise
- 07:17
A day hour lasts 52 min; a night hour, 1h 08m. Local time (America/Chicago).
Day
- 1♂︎ Mars07:17 – 08:09
- 2☉︎ Sun08:09 – 09:01
- 3♀︎ Venus09:01 – 09:53
- 4☿︎ Mercury09:53 – 10:45
- 5☽︎ Moon10:45 – 11:37
- 6♄︎ Saturn11:37 – 12:29
- 7♃︎ Jupiter12:29 – 13:21
- 8♂︎ Mars13:21 – 14:13
- 9☉︎ Sun14:13 – 15:05
- 10♀︎ Venus15:05 – 15:57
- 11☿︎ Mercury15:57 – 16:49
- 12☽︎ Moon16:49 – 17:41
Night
- 1♄︎ Saturn17:41 – 18:49
- 2♃︎ Jupiter18:49 – 19:57
- 3♂︎ Mars19:57 – 21:05
- 4☉︎ Sun21:05 – 22:13
- 5♀︎ Venus22:13 – 23:21
- 6☿︎ Mercury23:21 – 00:29
- 7☽︎ Moon00:29 – 01:37
- 8♄︎ Saturn01:37 – 02:45
- 9♃︎ Jupiter02:45 – 03:53
- 10♂︎ Mars03:53 – 05:01
- 11☉︎ Sun05:01 – 06:09
- 12♀︎ Venus06:09 – 07:17
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Tuesday, 12 January 2027, the Sun rises at 07:17 and sets at 17:41: the day lasts 10h 24m, that is twelve day hours of 52 min. The night, until the next sunrise at 07:17, lasts 13h 36m: twelve night hours of 1h 08m.
Which planet rules the first hour that day?
Mars, from 07:17 to 08:09: 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.