Planetary hours
in Tours.
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, 18 October 2025: day of Saturn
- Sunrise
- 08:20
- Sunset
- 19:03
- Next sunrise
- 08:21
A day hour lasts 54 min; a night hour, 1h 07m. Local time (Europe/Paris).
Day
- 1♄︎ Saturn08:20 – 09:13
- 2♃︎ Jupiter09:13 – 10:07
- 3♂︎ Mars10:07 – 11:01
- 4☉︎ Sun11:01 – 11:54
- 5♀︎ Venus11:54 – 12:48
- 6☿︎ Mercury12:48 – 13:41
- 7☽︎ Moon13:41 – 14:35
- 8♄︎ Saturn14:35 – 15:29
- 9♃︎ Jupiter15:29 – 16:22
- 10♂︎ Mars16:22 – 17:16
- 11☉︎ Sun17:16 – 18:10
- 12♀︎ Venus18:10 – 19:03
Night
- 1☿︎ Mercury19:03 – 20:10
- 2☽︎ Moon20:10 – 21:16
- 3♄︎ Saturn21:16 – 22:23
- 4♃︎ Jupiter22:23 – 23:29
- 5♂︎ Mars23:29 – 00:36
- 6☉︎ Sun00:36 – 01:42
- 7♀︎ Venus01:42 – 02:49
- 8☿︎ Mercury02:49 – 03:55
- 9☽︎ Moon03:55 – 05:02
- 10♄︎ Saturn05:02 – 06:08
- 11♃︎ Jupiter06:08 – 07:15
- 12♂︎ Mars07:15 – 08:21
Other cities · France
Questions
How are the planetary hours calculated in Tours?
On Saturday, 18 October 2025, the Sun rises at 08:20 and sets at 19:03: the day lasts 10h 43m, that is twelve day hours of 54 min. The night, until the next sunrise at 08:21, lasts 13h 18m: twelve night hours of 1h 07m.
Which planet rules the first hour that day?
Saturn, from 08:20 to 09:13: 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.