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, 28 January 2026: day of Mercury
- Sunrise
- 07:13
- Sunset
- 17:55
- Next sunrise
- 07:12
A day hour lasts 54 min; a night hour, 1h 06m. Local time (America/Chicago).
Day
- 1☿︎ Mercury07:13 – 08:06
- 2☽︎ Moon08:06 – 09:00
- 3♄︎ Saturn09:00 – 09:53
- 4♃︎ Jupiter09:53 – 10:47
- 5♂︎ Mars10:47 – 11:41
- 6☉︎ Sun11:41 – 12:34
- 7♀︎ Venus12:34 – 13:28
- 8☿︎ Mercury13:28 – 14:21
- 9☽︎ Moon14:21 – 15:15
- 10♄︎ Saturn15:15 – 16:08
- 11♃︎ Jupiter16:08 – 17:02
- 12♂︎ Mars17:02 – 17:55
Night
- 1☉︎ Sun17:55 – 19:02
- 2♀︎ Venus19:02 – 20:08
- 3☿︎ Mercury20:08 – 21:15
- 4☽︎ Moon21:15 – 22:21
- 5♄︎ Saturn22:21 – 23:27
- 6♃︎ Jupiter23:27 – 00:34
- 7♂︎ Mars00:34 – 01:40
- 8☉︎ Sun01:40 – 02:47
- 9♀︎ Venus02:47 – 03:53
- 10☿︎ Mercury03:53 – 05:00
- 11☽︎ Moon05:00 – 06:06
- 12♄︎ Saturn06:06 – 07:12
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Wednesday, 28 January 2026, the Sun rises at 07:13 and sets at 17:55: the day lasts 10h 42m, that is twelve day hours of 54 min. The night, until the next sunrise at 07:12, lasts 13h 17m: twelve night hours of 1h 06m.
Which planet rules the first hour that day?
Mercury, from 07:13 to 08:06: 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.