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, 15 December 2026: day of Mars
- Sunrise
- 07:11
- Sunset
- 16:20
- Next sunrise
- 07:11
A day hour lasts 46 min; a night hour, 1h 14m. Local time (America/Chicago).
Day
- 1♂︎ Mars07:11 – 07:56
- 2☉︎ Sun07:56 – 08:42
- 3♀︎ Venus08:42 – 09:28
- 4☿︎ Mercury09:28 – 10:14
- 5☽︎ Moon10:14 – 11:00
- 6♄︎ Saturn11:00 – 11:45
- 7♃︎ Jupiter11:45 – 12:31
- 8♂︎ Mars12:31 – 13:17
- 9☉︎ Sun13:17 – 14:03
- 10♀︎ Venus14:03 – 14:48
- 11☿︎ Mercury14:48 – 15:34
- 12☽︎ Moon15:34 – 16:20
Night
- 1♄︎ Saturn16:20 – 17:34
- 2♃︎ Jupiter17:34 – 18:49
- 3♂︎ Mars18:49 – 20:03
- 4☉︎ Sun20:03 – 21:17
- 5♀︎ Venus21:17 – 22:31
- 6☿︎ Mercury22:31 – 23:46
- 7☽︎ Moon23:46 – 01:00
- 8♄︎ Saturn01:00 – 02:14
- 9♃︎ Jupiter02:14 – 03:28
- 10♂︎ Mars03:28 – 04:43
- 11☉︎ Sun04:43 – 05:57
- 12♀︎ Venus05:57 – 07:11
Other cities · United States
Questions
How are the planetary hours calculated in Chicago?
On Tuesday, 15 December 2026, the Sun rises at 07:11 and sets at 16:20: the day lasts 9h 09m, that is twelve day hours of 46 min. The night, until the next sunrise at 07:11, lasts 14h 51m: twelve night hours of 1h 14m.
Which planet rules the first hour that day?
Mars, from 07:11 to 07:56: 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.