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 Wednesday, 21 October 2026: day of Mercury
- Sunrise
- 07:27
- Sunset
- 18:44
- Next sunrise
- 07:27
A day hour lasts 56 min; a night hour, 1h 04m. Local time (America/Chicago).
Day
- 1☿︎ Mercury07:27 – 08:23
- 2☽︎ Moon08:23 – 09:20
- 3♄︎ Saturn09:20 – 10:16
- 4♃︎ Jupiter10:16 – 11:12
- 5♂︎ Mars11:12 – 12:09
- 6☉︎ Sun12:09 – 13:05
- 7♀︎ Venus13:05 – 14:02
- 8☿︎ Mercury14:02 – 14:58
- 9☽︎ Moon14:58 – 15:55
- 10♄︎ Saturn15:55 – 16:51
- 11♃︎ Jupiter16:51 – 17:48
- 12♂︎ Mars17:48 – 18:44
Night
- 1☉︎ Sun18:44 – 19:48
- 2♀︎ Venus19:48 – 20:51
- 3☿︎ Mercury20:51 – 21:55
- 4☽︎ Moon21:55 – 22:58
- 5♄︎ Saturn22:58 – 00:02
- 6♃︎ Jupiter00:02 – 01:06
- 7♂︎ Mars01:06 – 02:09
- 8☉︎ Sun02:09 – 03:13
- 9♀︎ Venus03:13 – 04:17
- 10☿︎ Mercury04:17 – 05:20
- 11☽︎ Moon05:20 – 06:24
- 12♄︎ Saturn06:24 – 07:27
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Wednesday, 21 October 2026, the Sun rises at 07:27 and sets at 18:44: the day lasts 11h 17m, that is twelve day hours of 56 min. The night, until the next sunrise at 07:27, lasts 12h 43m: twelve night hours of 1h 04m.
Which planet rules the first hour that day?
Mercury, from 07:27 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 Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.