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, 20 January 2027: day of Mercury
- Sunrise
- 07:16
- Sunset
- 17:48
- Next sunrise
- 07:16
A day hour lasts 53 min; a night hour, 1h 07m. Local time (America/Chicago).
Day
- 1☿︎ Mercury07:16 – 08:09
- 2☽︎ Moon08:09 – 09:01
- 3♄︎ Saturn09:01 – 09:54
- 4♃︎ Jupiter09:54 – 10:47
- 5♂︎ Mars10:47 – 11:39
- 6☉︎ Sun11:39 – 12:32
- 7♀︎ Venus12:32 – 13:25
- 8☿︎ Mercury13:25 – 14:17
- 9☽︎ Moon14:17 – 15:10
- 10♄︎ Saturn15:10 – 16:03
- 11♃︎ Jupiter16:03 – 16:55
- 12♂︎ Mars16:55 – 17:48
Night
- 1☉︎ Sun17:48 – 18:55
- 2♀︎ Venus18:55 – 20:03
- 3☿︎ Mercury20:03 – 21:10
- 4☽︎ Moon21:10 – 22:17
- 5♄︎ Saturn22:17 – 23:25
- 6♃︎ Jupiter23:25 – 00:32
- 7♂︎ Mars00:32 – 01:39
- 8☉︎ Sun01:39 – 02:47
- 9♀︎ Venus02:47 – 03:54
- 10☿︎ Mercury03:54 – 05:01
- 11☽︎ Moon05:01 – 06:08
- 12♄︎ Saturn06:08 – 07:16
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Wednesday, 20 January 2027, the Sun rises at 07:16 and sets at 17:48: the day lasts 10h 32m, that is twelve day hours of 53 min. The night, until the next sunrise at 07:16, lasts 13h 28m: twelve night hours of 1h 07m.
Which planet rules the first hour that day?
Mercury, from 07:16 to 08:09: 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.