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, 8 December 2026: day of Mars
- Sunrise
- 07:05
- Sunset
- 16:19
- Next sunrise
- 07:06
A day hour lasts 46 min; a night hour, 1h 14m. Local time (America/Chicago).
Day
- 1♂︎ Mars07:05 – 07:51
- 2☉︎ Sun07:51 – 08:37
- 3♀︎ Venus08:37 – 09:23
- 4☿︎ Mercury09:23 – 10:10
- 5☽︎ Moon10:10 – 10:56
- 6♄︎ Saturn10:56 – 11:42
- 7♃︎ Jupiter11:42 – 12:28
- 8♂︎ Mars12:28 – 13:14
- 9☉︎ Sun13:14 – 14:00
- 10♀︎ Venus14:00 – 14:47
- 11☿︎ Mercury14:47 – 15:33
- 12☽︎ Moon15:33 – 16:19
Night
- 1♄︎ Saturn16:19 – 17:33
- 2♃︎ Jupiter17:33 – 18:47
- 3♂︎ Mars18:47 – 20:01
- 4☉︎ Sun20:01 – 21:15
- 5♀︎ Venus21:15 – 22:29
- 6☿︎ Mercury22:29 – 23:42
- 7☽︎ Moon23:42 – 00:56
- 8♄︎ Saturn00:56 – 02:10
- 9♃︎ Jupiter02:10 – 03:24
- 10♂︎ Mars03:24 – 04:38
- 11☉︎ Sun04:38 – 05:52
- 12♀︎ Venus05:52 – 07:06
Other cities · United States
Questions
How are the planetary hours calculated in Chicago?
On Tuesday, 8 December 2026, the Sun rises at 07:05 and sets at 16:19: the day lasts 9h 14m, that is twelve day hours of 46 min. The night, until the next sunrise at 07:06, lasts 14h 47m: twelve night hours of 1h 14m.
Which planet rules the first hour that day?
Mars, from 07:05 to 07:51: 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.