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, 21 July 2026: day of Mars
- Sunrise
- 05:34
- Sunset
- 20:19
- Next sunrise
- 05:34
A day hour lasts 1h 14m; a night hour, 46 min. Local time (America/Chicago).
Day
- 1♂︎ Mars05:34 – 06:47
- 2☉︎ Sun06:47 – 08:01
- 3♀︎ Venus08:01 – 09:15
- 4☿︎ Mercury09:15 – 10:29
- 5☽︎ Moon10:29 – 11:43
- 6♄︎ Saturn11:43 – 12:56
- 7♃︎ Jupiter12:56 – 14:10
- 8♂︎ Mars14:10 – 15:24
- 9☉︎ Sun15:24 – 16:38
- 10♀︎ Venus16:38 – 17:51
- 11☿︎ Mercury17:51 – 19:05
- 12☽︎ Moon19:05 – 20:19
Night
- 1♄︎ Saturn20:19 – 21:05
- 2♃︎ Jupiter21:05 – 21:52
- 3♂︎ Mars21:52 – 22:38
- 4☉︎ Sun22:38 – 23:24
- 5♀︎ Venus23:24 – 00:10
- 6☿︎ Mercury00:10 – 00:57
- 7☽︎ Moon00:57 – 01:43
- 8♄︎ Saturn01:43 – 02:29
- 9♃︎ Jupiter02:29 – 03:16
- 10♂︎ Mars03:16 – 04:02
- 11☉︎ Sun04:02 – 04:48
- 12♀︎ Venus04:48 – 05:34
Other cities · United States
Questions
How are the planetary hours calculated in Chicago?
On Tuesday, 21 July 2026, the Sun rises at 05:34 and sets at 20:19: the day lasts 14h 45m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 05:34, lasts 9h 15m: twelve night hours of 46 min.
Which planet rules the first hour that day?
Mars, from 05:34 to 06:47: 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.