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 Wednesday, 25 February 2026: day of Mercury
- Sunrise
- 07:53
- Sunset
- 18:45
- Next sunrise
- 07:52
A day hour lasts 54 min; a night hour, 1h 06m. Local time (Europe/Paris).
Day
- 1☿︎ Mercury07:53 – 08:48
- 2☽︎ Moon08:48 – 09:42
- 3♄︎ Saturn09:42 – 10:36
- 4♃︎ Jupiter10:36 – 11:31
- 5♂︎ Mars11:31 – 12:25
- 6☉︎ Sun12:25 – 13:19
- 7♀︎ Venus13:19 – 14:13
- 8☿︎ Mercury14:13 – 15:08
- 9☽︎ Moon15:08 – 16:02
- 10♄︎ Saturn16:02 – 16:56
- 11♃︎ Jupiter16:56 – 17:51
- 12♂︎ Mars17:51 – 18:45
Night
- 1☉︎ Sun18:45 – 19:50
- 2♀︎ Venus19:50 – 20:56
- 3☿︎ Mercury20:56 – 22:01
- 4☽︎ Moon22:01 – 23:07
- 5♄︎ Saturn23:07 – 00:13
- 6♃︎ Jupiter00:13 – 01:18
- 7♂︎ Mars01:18 – 02:24
- 8☉︎ Sun02:24 – 03:29
- 9♀︎ Venus03:29 – 04:35
- 10☿︎ Mercury04:35 – 05:40
- 11☽︎ Moon05:40 – 06:46
- 12♄︎ Saturn06:46 – 07:52
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Wednesday, 25 February 2026, the Sun rises at 07:53 and sets at 18:45: the day lasts 10h 51m, that is twelve day hours of 54 min. The night, until the next sunrise at 07:52, lasts 13h 07m: twelve night hours of 1h 06m.
Which planet rules the first hour that day?
Mercury, from 07:53 to 08:48: 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.