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 Thursday, 21 May 2026: day of Jupiter
- Sunrise
- 06:23
- Sunset
- 21:42
- Next sunrise
- 06:22
A day hour lasts 1h 17m; a night hour, 43 min. Local time (Europe/Paris).
Day
- 1♃︎ Jupiter06:23 – 07:40
- 2♂︎ Mars07:40 – 08:56
- 3☉︎ Sun08:56 – 10:13
- 4♀︎ Venus10:13 – 11:29
- 5☿︎ Mercury11:29 – 12:46
- 6☽︎ Moon12:46 – 14:03
- 7♄︎ Saturn14:03 – 15:19
- 8♃︎ Jupiter15:19 – 16:36
- 9♂︎ Mars16:36 – 17:53
- 10☉︎ Sun17:53 – 19:09
- 11♀︎ Venus19:09 – 20:26
- 12☿︎ Mercury20:26 – 21:42
Night
- 1☽︎ Moon21:42 – 22:26
- 2♄︎ Saturn22:26 – 23:09
- 3♃︎ Jupiter23:09 – 23:52
- 4♂︎ Mars23:52 – 00:36
- 5☉︎ Sun00:36 – 01:19
- 6♀︎ Venus01:19 – 02:02
- 7☿︎ Mercury02:02 – 02:45
- 8☽︎ Moon02:45 – 03:29
- 9♄︎ Saturn03:29 – 04:12
- 10♃︎ Jupiter04:12 – 04:55
- 11♂︎ Mars04:55 – 05:39
- 12☉︎ Sun05:39 – 06:22
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Thursday, 21 May 2026, the Sun rises at 06:23 and sets at 21:42: the day lasts 15h 19m, that is twelve day hours of 1h 17m. The night, until the next sunrise at 06:22, lasts 8h 40m: twelve night hours of 43 min.
Which planet rules the first hour that day?
Jupiter, from 06:23 to 07:40: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.