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 Monday, 18 May 2026: day of the Moon
- Sunrise
- 06:26
- Sunset
- 20:09
- Next sunrise
- 06:26
A day hour lasts 1h 09m; a night hour, 51 min. Local time (America/Chicago).
Day
- 1☽︎ Moon06:26 – 07:35
- 2♄︎ Saturn07:35 – 08:43
- 3♃︎ Jupiter08:43 – 09:52
- 4♂︎ Mars09:52 – 11:00
- 5☉︎ Sun11:00 – 12:09
- 6♀︎ Venus12:09 – 13:18
- 7☿︎ Mercury13:18 – 14:26
- 8☽︎ Moon14:26 – 15:35
- 9♄︎ Saturn15:35 – 16:43
- 10♃︎ Jupiter16:43 – 17:52
- 11♂︎ Mars17:52 – 19:00
- 12☉︎ Sun19:00 – 20:09
Night
- 1♀︎ Venus20:09 – 21:00
- 2☿︎ Mercury21:00 – 21:52
- 3☽︎ Moon21:52 – 22:43
- 4♄︎ Saturn22:43 – 23:35
- 5♃︎ Jupiter23:35 – 00:26
- 6♂︎ Mars00:26 – 01:17
- 7☉︎ Sun01:17 – 02:09
- 8♀︎ Venus02:09 – 03:00
- 9☿︎ Mercury03:00 – 03:51
- 10☽︎ Moon03:51 – 04:43
- 11♄︎ Saturn04:43 – 05:34
- 12♃︎ Jupiter05:34 – 06:26
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Monday, 18 May 2026, the Sun rises at 06:26 and sets at 20:09: the day lasts 13h 43m, that is twelve day hours of 1h 09m. The night, until the next sunrise at 06:26, lasts 10h 17m: twelve night hours of 51 min.
Which planet rules the first hour that day?
The Moon, from 06:26 to 07:35: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.