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 Sunday, 20 December 2026: day of the Sun
- Sunrise
- 07:12
- Sunset
- 17:26
- Next sunrise
- 07:12
A day hour lasts 51 min; a night hour, 1h 09m. Local time (America/Chicago).
Day
- 1☉︎ Sun07:12 – 08:03
- 2♀︎ Venus08:03 – 08:54
- 3☿︎ Mercury08:54 – 09:45
- 4☽︎ Moon09:45 – 10:36
- 5♄︎ Saturn10:36 – 11:27
- 6♃︎ Jupiter11:27 – 12:19
- 7♂︎ Mars12:19 – 13:10
- 8☉︎ Sun13:10 – 14:01
- 9♀︎ Venus14:01 – 14:52
- 10☿︎ Mercury14:52 – 15:43
- 11☽︎ Moon15:43 – 16:34
- 12♄︎ Saturn16:34 – 17:26
Night
- 1♃︎ Jupiter17:26 – 18:35
- 2♂︎ Mars18:35 – 19:43
- 3☉︎ Sun19:43 – 20:52
- 4♀︎ Venus20:52 – 22:01
- 5☿︎ Mercury22:01 – 23:10
- 6☽︎ Moon23:10 – 00:19
- 7♄︎ Saturn00:19 – 01:28
- 8♃︎ Jupiter01:28 – 02:37
- 9♂︎ Mars02:37 – 03:46
- 10☉︎ Sun03:46 – 04:54
- 11♀︎ Venus04:54 – 06:03
- 12☿︎ Mercury06:03 – 07:12
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Sunday, 20 December 2026, the Sun rises at 07:12 and sets at 17:26: the day lasts 10h 14m, that is twelve day hours of 51 min. The night, until the next sunrise at 07:12, lasts 13h 46m: twelve night hours of 1h 09m.
Which planet rules the first hour that day?
The Sun, from 07:12 to 08:03: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.