Planetary hours
in Chicago.
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 Saturday, 12 December 2026: day of Saturn
- Sunrise
- 07:08
- Sunset
- 16:19
- Next sunrise
- 07:09
A day hour lasts 46 min; a night hour, 1h 14m. Local time (America/Chicago).
Day
- 1♄︎ Saturn07:08 – 07:54
- 2♃︎ Jupiter07:54 – 08:40
- 3♂︎ Mars08:40 – 09:26
- 4☉︎ Sun09:26 – 10:12
- 5♀︎ Venus10:12 – 10:58
- 6☿︎ Mercury10:58 – 11:44
- 7☽︎ Moon11:44 – 12:30
- 8♄︎ Saturn12:30 – 13:16
- 9♃︎ Jupiter13:16 – 14:02
- 10♂︎ Mars14:02 – 14:47
- 11☉︎ Sun14:47 – 15:33
- 12♀︎ Venus15:33 – 16:19
Night
- 1☿︎ Mercury16:19 – 17:33
- 2☽︎ Moon17:33 – 18:48
- 3♄︎ Saturn18:48 – 20:02
- 4♃︎ Jupiter20:02 – 21:16
- 5♂︎ Mars21:16 – 22:30
- 6☉︎ Sun22:30 – 23:44
- 7♀︎ Venus23:44 – 00:58
- 8☿︎ Mercury00:58 – 02:13
- 9☽︎ Moon02:13 – 03:27
- 10♄︎ Saturn03:27 – 04:41
- 11♃︎ Jupiter04:41 – 05:55
- 12♂︎ Mars05:55 – 07:09
Other cities · United States
Questions
How are the planetary hours calculated in Chicago?
On Saturday, 12 December 2026, the Sun rises at 07:08 and sets at 16:19: the day lasts 9h 11m, that is twelve day hours of 46 min. The night, until the next sunrise at 07:09, lasts 14h 50m: twelve night hours of 1h 14m.
Which planet rules the first hour that day?
Saturn, from 07:08 to 07:54: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.