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 September 2026: day of Mars
- Sunrise
- 06:23
- Sunset
- 19:11
- Next sunrise
- 06:24
A day hour lasts 1h 04m; a night hour, 56 min. Local time (America/Chicago).
Day
- 1♂︎ Mars06:23 – 07:27
- 2☉︎ Sun07:27 – 08:31
- 3♀︎ Venus08:31 – 09:35
- 4☿︎ Mercury09:35 – 10:39
- 5☽︎ Moon10:39 – 11:43
- 6♄︎ Saturn11:43 – 12:47
- 7♃︎ Jupiter12:47 – 13:51
- 8♂︎ Mars13:51 – 14:55
- 9☉︎ Sun14:55 – 15:59
- 10♀︎ Venus15:59 – 17:03
- 11☿︎ Mercury17:03 – 18:07
- 12☽︎ Moon18:07 – 19:11
Night
- 1♄︎ Saturn19:11 – 20:08
- 2♃︎ Jupiter20:08 – 21:04
- 3♂︎ Mars21:04 – 22:00
- 4☉︎ Sun22:00 – 22:56
- 5♀︎ Venus22:56 – 23:52
- 6☿︎ Mercury23:52 – 00:48
- 7☽︎ Moon00:48 – 01:44
- 8♄︎ Saturn01:44 – 02:40
- 9♃︎ Jupiter02:40 – 03:36
- 10♂︎ Mars03:36 – 04:32
- 11☉︎ Sun04:32 – 05:28
- 12♀︎ Venus05:28 – 06:24
Other cities · United States
Questions
How are the planetary hours calculated in Chicago?
On Tuesday, 8 September 2026, the Sun rises at 06:23 and sets at 19:11: the day lasts 12h 48m, that is twelve day hours of 1h 04m. The night, until the next sunrise at 06:24, lasts 11h 13m: twelve night hours of 56 min.
Which planet rules the first hour that day?
Mars, from 06:23 to 07:27: 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.