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 Sunday, 21 December 2025: day of the Sun
- Sunrise
- 08:41
- Sunset
- 17:09
- Next sunrise
- 08:42
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Paris).
Day
- 1☉︎ Sun08:41 – 09:23
- 2♀︎ Venus09:23 – 10:06
- 3☿︎ Mercury10:06 – 10:48
- 4☽︎ Moon10:48 – 11:30
- 5♄︎ Saturn11:30 – 12:13
- 6♃︎ Jupiter12:13 – 12:55
- 7♂︎ Mars12:55 – 13:37
- 8☉︎ Sun13:37 – 14:19
- 9♀︎ Venus14:19 – 15:02
- 10☿︎ Mercury15:02 – 15:44
- 11☽︎ Moon15:44 – 16:26
- 12♄︎ Saturn16:26 – 17:09
Night
- 1♃︎ Jupiter17:09 – 18:26
- 2♂︎ Mars18:26 – 19:44
- 3☉︎ Sun19:44 – 21:02
- 4♀︎ Venus21:02 – 22:20
- 5☿︎ Mercury22:20 – 23:37
- 6☽︎ Moon23:37 – 00:55
- 7♄︎ Saturn00:55 – 02:13
- 8♃︎ Jupiter02:13 – 03:31
- 9♂︎ Mars03:31 – 04:48
- 10☉︎ Sun04:48 – 06:06
- 11♀︎ Venus06:06 – 07:24
- 12☿︎ Mercury07:24 – 08:42
Other cities · France
Questions
How are the planetary hours calculated in Tours?
On Sunday, 21 December 2025, the Sun rises at 08:41 and sets at 17:09: the day lasts 8h 27m, that is twelve day hours of 42 min. The night, until the next sunrise at 08:42, lasts 15h 33m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
The Sun, from 08:41 to 09:23: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.