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 Tuesday, 2 December 2025: day of Mars
- Sunrise
- 06:59
- Sunset
- 16:20
- Next sunrise
- 07:00
A day hour lasts 47 min; a night hour, 1h 13m. Local time (America/Chicago).
Day
- 1♂︎ Mars06:59 – 07:46
- 2☉︎ Sun07:46 – 08:33
- 3♀︎ Venus08:33 – 09:20
- 4☿︎ Mercury09:20 – 10:06
- 5☽︎ Moon10:06 – 10:53
- 6♄︎ Saturn10:53 – 11:40
- 7♃︎ Jupiter11:40 – 12:26
- 8♂︎ Mars12:26 – 13:13
- 9☉︎ Sun13:13 – 14:00
- 10♀︎ Venus14:00 – 14:46
- 11☿︎ Mercury14:46 – 15:33
- 12☽︎ Moon15:33 – 16:20
Night
- 1♄︎ Saturn16:20 – 17:33
- 2♃︎ Jupiter17:33 – 18:46
- 3♂︎ Mars18:46 – 20:00
- 4☉︎ Sun20:00 – 21:13
- 5♀︎ Venus21:13 – 22:27
- 6☿︎ Mercury22:27 – 23:40
- 7☽︎ Moon23:40 – 00:53
- 8♄︎ Saturn00:53 – 02:07
- 9♃︎ Jupiter02:07 – 03:20
- 10♂︎ Mars03:20 – 04:34
- 11☉︎ Sun04:34 – 05:47
- 12♀︎ Venus05:47 – 07:00
Other cities · United States
Questions
How are the planetary hours calculated in Chicago?
On Tuesday, 2 December 2025, the Sun rises at 06:59 and sets at 16:20: the day lasts 9h 20m, that is twelve day hours of 47 min. The night, until the next sunrise at 07:00, lasts 14h 41m: twelve night hours of 1h 13m.
Which planet rules the first hour that day?
Mars, from 06:59 to 07:46: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.