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 Saturday, 17 October 2026: day of Saturn
- Sunrise
- 07:05
- Sunset
- 18:05
- Next sunrise
- 07:06
A day hour lasts 55 min; a night hour, 1h 05m. Local time (America/Chicago).
Day
- 1♄︎ Saturn07:05 – 08:00
- 2♃︎ Jupiter08:00 – 08:55
- 3♂︎ Mars08:55 – 09:50
- 4☉︎ Sun09:50 – 10:45
- 5♀︎ Venus10:45 – 11:40
- 6☿︎ Mercury11:40 – 12:35
- 7☽︎ Moon12:35 – 13:30
- 8♄︎ Saturn13:30 – 14:25
- 9♃︎ Jupiter14:25 – 15:20
- 10♂︎ Mars15:20 – 16:15
- 11☉︎ Sun16:15 – 17:10
- 12♀︎ Venus17:10 – 18:05
Night
- 1☿︎ Mercury18:05 – 19:10
- 2☽︎ Moon19:10 – 20:15
- 3♄︎ Saturn20:15 – 21:21
- 4♃︎ Jupiter21:21 – 22:26
- 5♂︎ Mars22:26 – 23:31
- 6☉︎ Sun23:31 – 00:36
- 7♀︎ Venus00:36 – 01:41
- 8☿︎ Mercury01:41 – 02:46
- 9☽︎ Moon02:46 – 03:51
- 10♄︎ Saturn03:51 – 04:56
- 11♃︎ Jupiter04:56 – 06:01
- 12♂︎ Mars06:01 – 07:06
Other cities · United States
Questions
How are the planetary hours calculated in Chicago?
On Saturday, 17 October 2026, the Sun rises at 07:05 and sets at 18:05: the day lasts 11h 01m, that is twelve day hours of 55 min. The night, until the next sunrise at 07:06, lasts 13h 01m: twelve night hours of 1h 05m.
Which planet rules the first hour that day?
Saturn, from 07:05 to 08:00: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.