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 Friday, 18 September 2026: day of Venus
- Sunrise
- 07:07
- Sunset
- 19:22
- Next sunrise
- 07:08
A day hour lasts 1h 01m; a night hour, 59 min. Local time (America/Chicago).
Day
- 1♀︎ Venus07:07 – 08:08
- 2☿︎ Mercury08:08 – 09:10
- 3☽︎ Moon09:10 – 10:11
- 4♄︎ Saturn10:11 – 11:12
- 5♃︎ Jupiter11:12 – 12:13
- 6♂︎ Mars12:13 – 13:15
- 7☉︎ Sun13:15 – 14:16
- 8♀︎ Venus14:16 – 15:17
- 9☿︎ Mercury15:17 – 16:19
- 10☽︎ Moon16:19 – 17:20
- 11♄︎ Saturn17:20 – 18:21
- 12♃︎ Jupiter18:21 – 19:22
Night
- 1♂︎ Mars19:22 – 20:21
- 2☉︎ Sun20:21 – 21:20
- 3♀︎ Venus21:20 – 22:19
- 4☿︎ Mercury22:19 – 23:17
- 5☽︎ Moon23:17 – 00:16
- 6♄︎ Saturn00:16 – 01:15
- 7♃︎ Jupiter01:15 – 02:14
- 8♂︎ Mars02:14 – 03:13
- 9☉︎ Sun03:13 – 04:11
- 10♀︎ Venus04:11 – 05:10
- 11☿︎ Mercury05:10 – 06:09
- 12☽︎ Moon06:09 – 07:08
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Friday, 18 September 2026, the Sun rises at 07:07 and sets at 19:22: the day lasts 12h 15m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 07:08, lasts 11h 45m: twelve night hours of 59 min.
Which planet rules the first hour that day?
Venus, from 07:07 to 08:08: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.