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 Wednesday, 21 January 2026: day of Mercury
- Sunrise
- 08:35
- Sunset
- 17:42
- Next sunrise
- 08:34
A day hour lasts 46 min; a night hour, 1h 14m. Local time (Europe/Paris).
Day
- 1☿︎ Mercury08:35 – 09:20
- 2☽︎ Moon09:20 – 10:06
- 3♄︎ Saturn10:06 – 10:52
- 4♃︎ Jupiter10:52 – 11:37
- 5♂︎ Mars11:37 – 12:23
- 6☉︎ Sun12:23 – 13:08
- 7♀︎ Venus13:08 – 13:54
- 8☿︎ Mercury13:54 – 14:39
- 9☽︎ Moon14:39 – 15:25
- 10♄︎ Saturn15:25 – 16:10
- 11♃︎ Jupiter16:10 – 16:56
- 12♂︎ Mars16:56 – 17:42
Night
- 1☉︎ Sun17:42 – 18:56
- 2♀︎ Venus18:56 – 20:10
- 3☿︎ Mercury20:10 – 21:25
- 4☽︎ Moon21:25 – 22:39
- 5♄︎ Saturn22:39 – 23:53
- 6♃︎ Jupiter23:53 – 01:08
- 7♂︎ Mars01:08 – 02:22
- 8☉︎ Sun02:22 – 03:36
- 9♀︎ Venus03:36 – 04:51
- 10☿︎ Mercury04:51 – 06:05
- 11☽︎ Moon06:05 – 07:20
- 12♄︎ Saturn07:20 – 08:34
Other cities · France
Questions
How are the planetary hours calculated in Tours?
On Wednesday, 21 January 2026, the Sun rises at 08:35 and sets at 17:42: the day lasts 9h 07m, that is twelve day hours of 46 min. The night, until the next sunrise at 08:34, lasts 14h 52m: twelve night hours of 1h 14m.
Which planet rules the first hour that day?
Mercury, from 08:35 to 09:20: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.