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 Friday, 18 December 2026: day of Venus
- Sunrise
- 08:39
- Sunset
- 17:07
- Next sunrise
- 08:40
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Paris).
Day
- 1♀︎ Venus08:39 – 09:22
- 2☿︎ Mercury09:22 – 10:04
- 3☽︎ Moon10:04 – 10:46
- 4♄︎ Saturn10:46 – 11:29
- 5♃︎ Jupiter11:29 – 12:11
- 6♂︎ Mars12:11 – 12:53
- 7☉︎ Sun12:53 – 13:36
- 8♀︎ Venus13:36 – 14:18
- 9☿︎ Mercury14:18 – 15:00
- 10☽︎ Moon15:00 – 15:43
- 11♄︎ Saturn15:43 – 16:25
- 12♃︎ Jupiter16:25 – 17:07
Night
- 1♂︎ Mars17:07 – 18:25
- 2☉︎ Sun18:25 – 19:43
- 3♀︎ Venus19:43 – 21:00
- 4☿︎ Mercury21:00 – 22:18
- 5☽︎ Moon22:18 – 23:36
- 6♄︎ Saturn23:36 – 00:54
- 7♃︎ Jupiter00:54 – 02:11
- 8♂︎ Mars02:11 – 03:29
- 9☉︎ Sun03:29 – 04:47
- 10♀︎ Venus04:47 – 06:04
- 11☿︎ Mercury06:04 – 07:22
- 12☽︎ Moon07:22 – 08:40
Other cities · France
Questions
How are the planetary hours calculated in Tours?
On Friday, 18 December 2026, the Sun rises at 08:39 and sets at 17:07: the day lasts 8h 28m, that is twelve day hours of 42 min. The night, until the next sunrise at 08:40, lasts 15h 33m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Venus, from 08:39 to 09:22: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.