Planetary hours
in Grenoble.
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, 16 September 2026: day of Mercury
- Sunrise
- 07:16
- Sunset
- 19:46
- Next sunrise
- 07:17
A day hour lasts 1h 02m; a night hour, 58 min. Local time (Europe/Paris).
Day
- 1☿︎ Mercury07:16 – 08:19
- 2☽︎ Moon08:19 – 09:21
- 3♄︎ Saturn09:21 – 10:24
- 4♃︎ Jupiter10:24 – 11:26
- 5♂︎ Mars11:26 – 12:29
- 6☉︎ Sun12:29 – 13:31
- 7♀︎ Venus13:31 – 14:34
- 8☿︎ Mercury14:34 – 15:36
- 9☽︎ Moon15:36 – 16:39
- 10♄︎ Saturn16:39 – 17:41
- 11♃︎ Jupiter17:41 – 18:43
- 12♂︎ Mars18:43 – 19:46
Night
- 1☉︎ Sun19:46 – 20:44
- 2♀︎ Venus20:44 – 21:41
- 3☿︎ Mercury21:41 – 22:39
- 4☽︎ Moon22:39 – 23:36
- 5♄︎ Saturn23:36 – 00:34
- 6♃︎ Jupiter00:34 – 01:32
- 7♂︎ Mars01:32 – 02:29
- 8☉︎ Sun02:29 – 03:27
- 9♀︎ Venus03:27 – 04:25
- 10☿︎ Mercury04:25 – 05:22
- 11☽︎ Moon05:22 – 06:20
- 12♄︎ Saturn06:20 – 07:17
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Wednesday, 16 September 2026, the Sun rises at 07:16 and sets at 19:46: the day lasts 12h 30m, that is twelve day hours of 1h 02m. The night, until the next sunrise at 07:17, lasts 11h 32m: twelve night hours of 58 min.
Which planet rules the first hour that day?
Mercury, from 07:16 to 08:19: 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.