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, 18 January 2028: day of Mars
- Sunrise
- 07:17
- Sunset
- 17:46
- Next sunrise
- 07:16
A day hour lasts 52 min; a night hour, 1h 08m. Local time (America/Chicago).
Day
- 1♂︎ Mars07:17 – 08:09
- 2☉︎ Sun08:09 – 09:02
- 3♀︎ Venus09:02 – 09:54
- 4☿︎ Mercury09:54 – 10:46
- 5☽︎ Moon10:46 – 11:39
- 6♄︎ Saturn11:39 – 12:31
- 7♃︎ Jupiter12:31 – 13:24
- 8♂︎ Mars13:24 – 14:16
- 9☉︎ Sun14:16 – 15:09
- 10♀︎ Venus15:09 – 16:01
- 11☿︎ Mercury16:01 – 16:54
- 12☽︎ Moon16:54 – 17:46
Night
- 1♄︎ Saturn17:46 – 18:54
- 2♃︎ Jupiter18:54 – 20:01
- 3♂︎ Mars20:01 – 21:09
- 4☉︎ Sun21:09 – 22:16
- 5♀︎ Venus22:16 – 23:24
- 6☿︎ Mercury23:24 – 00:31
- 7☽︎ Moon00:31 – 01:39
- 8♄︎ Saturn01:39 – 02:46
- 9♃︎ Jupiter02:46 – 03:54
- 10♂︎ Mars03:54 – 05:01
- 11☉︎ Sun05:01 – 06:09
- 12♀︎ Venus06:09 – 07:16
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Tuesday, 18 January 2028, the Sun rises at 07:17 and sets at 17:46: the day lasts 10h 30m, that is twelve day hours of 52 min. The night, until the next sunrise at 07:16, lasts 13h 30m: 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.