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, 12 February 2026: day of Jupiter
- Sunrise
- 08:16
- Sunset
- 18:25
- Next sunrise
- 08:14
A day hour lasts 51 min; a night hour, 1h 09m. Local time (Europe/Paris).
Day
- 1♃︎ Jupiter08:16 – 09:06
- 2♂︎ Mars09:06 – 09:57
- 3☉︎ Sun09:57 – 10:48
- 4♀︎ Venus10:48 – 11:39
- 5☿︎ Mercury11:39 – 12:29
- 6☽︎ Moon12:29 – 13:20
- 7♄︎ Saturn13:20 – 14:11
- 8♃︎ Jupiter14:11 – 15:02
- 9♂︎ Mars15:02 – 15:53
- 10☉︎ Sun15:53 – 16:43
- 11♀︎ Venus16:43 – 17:34
- 12☿︎ Mercury17:34 – 18:25
Night
- 1☽︎ Moon18:25 – 19:34
- 2♄︎ Saturn19:34 – 20:43
- 3♃︎ Jupiter20:43 – 21:52
- 4♂︎ Mars21:52 – 23:01
- 5☉︎ Sun23:01 – 00:10
- 6♀︎ Venus00:10 – 01:19
- 7☿︎ Mercury01:19 – 02:29
- 8☽︎ Moon02:29 – 03:38
- 9♄︎ Saturn03:38 – 04:47
- 10♃︎ Jupiter04:47 – 05:56
- 11♂︎ Mars05:56 – 07:05
- 12☉︎ Sun07:05 – 08:14
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Thursday, 12 February 2026, the Sun rises at 08:16 and sets at 18:25: the day lasts 10h 09m, that is twelve day hours of 51 min. The night, until the next sunrise at 08:14, lasts 13h 49m: twelve night hours of 1h 09m.
Which planet rules the first hour that day?
Jupiter, from 08:16 to 09:06: 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.