Planetary hours
in Nantes.
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 Tuesday, 21 July 2026: day of Mars
- Sunrise
- 06:31
- Sunset
- 21:52
- Next sunrise
- 06:32
A day hour lasts 1h 17m; a night hour, 43 min. Local time (Europe/Paris).
Day
- 1♂︎ Mars06:31 – 07:48
- 2☉︎ Sun07:48 – 09:05
- 3♀︎ Venus09:05 – 10:22
- 4☿︎ Mercury10:22 – 11:38
- 5☽︎ Moon11:38 – 12:55
- 6♄︎ Saturn12:55 – 14:12
- 7♃︎ Jupiter14:12 – 15:29
- 8♂︎ Mars15:29 – 16:45
- 9☉︎ Sun16:45 – 18:02
- 10♀︎ Venus18:02 – 19:19
- 11☿︎ Mercury19:19 – 20:36
- 12☽︎ Moon20:36 – 21:52
Night
- 1♄︎ Saturn21:52 – 22:36
- 2♃︎ Jupiter22:36 – 23:19
- 3♂︎ Mars23:19 – 00:02
- 4☉︎ Sun00:02 – 00:46
- 5♀︎ Venus00:46 – 01:29
- 6☿︎ Mercury01:29 – 02:12
- 7☽︎ Moon02:12 – 02:56
- 8♄︎ Saturn02:56 – 03:39
- 9♃︎ Jupiter03:39 – 04:22
- 10♂︎ Mars04:22 – 05:06
- 11☉︎ Sun05:06 – 05:49
- 12♀︎ Venus05:49 – 06:32
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Tuesday, 21 July 2026, the Sun rises at 06:31 and sets at 21:52: the day lasts 15h 21m, that is twelve day hours of 1h 17m. The night, until the next sunrise at 06:32, lasts 8h 40m: twelve night hours of 43 min.
Which planet rules the first hour that day?
Mars, from 06:31 to 07:48: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.