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, 1 April 2026: day of Mercury
- Sunrise
- 07:10
- Sunset
- 19:40
- Next sunrise
- 07:09
A day hour lasts 1h 02m; a night hour, 57 min. Local time (America/Chicago).
Day
- 1☿︎ Mercury07:10 – 08:13
- 2☽︎ Moon08:13 – 09:15
- 3♄︎ Saturn09:15 – 10:18
- 4♃︎ Jupiter10:18 – 11:20
- 5♂︎ Mars11:20 – 12:23
- 6☉︎ Sun12:23 – 13:25
- 7♀︎ Venus13:25 – 14:27
- 8☿︎ Mercury14:27 – 15:30
- 9☽︎ Moon15:30 – 16:32
- 10♄︎ Saturn16:32 – 17:35
- 11♃︎ Jupiter17:35 – 18:37
- 12♂︎ Mars18:37 – 19:40
Night
- 1☉︎ Sun19:40 – 20:37
- 2♀︎ Venus20:37 – 21:35
- 3☿︎ Mercury21:35 – 22:32
- 4☽︎ Moon22:32 – 23:29
- 5♄︎ Saturn23:29 – 00:27
- 6♃︎ Jupiter00:27 – 01:24
- 7♂︎ Mars01:24 – 02:22
- 8☉︎ Sun02:22 – 03:19
- 9♀︎ Venus03:19 – 04:17
- 10☿︎ Mercury04:17 – 05:14
- 11☽︎ Moon05:14 – 06:12
- 12♄︎ Saturn06:12 – 07:09
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Wednesday, 1 April 2026, the Sun rises at 07:10 and sets at 19:40: the day lasts 12h 29m, that is twelve day hours of 1h 02m. The night, until the next sunrise at 07:09, lasts 11h 29m: twelve night hours of 57 min.
Which planet rules the first hour that day?
Mercury, from 07:10 to 08:13: 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.