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, 17 February 2026: day of Mars
- Sunrise
- 08:07
- Sunset
- 18:33
- Next sunrise
- 08:06
A day hour lasts 52 min; a night hour, 1h 08m. Local time (Europe/Paris).
Day
- 1♂︎ Mars08:07 – 09:00
- 2☉︎ Sun09:00 – 09:52
- 3♀︎ Venus09:52 – 10:44
- 4☿︎ Mercury10:44 – 11:36
- 5☽︎ Moon11:36 – 12:28
- 6♄︎ Saturn12:28 – 13:20
- 7♃︎ Jupiter13:20 – 14:12
- 8♂︎ Mars14:12 – 15:04
- 9☉︎ Sun15:04 – 15:56
- 10♀︎ Venus15:56 – 16:48
- 11☿︎ Mercury16:48 – 17:41
- 12☽︎ Moon17:41 – 18:33
Night
- 1♄︎ Saturn18:33 – 19:40
- 2♃︎ Jupiter19:40 – 20:48
- 3♂︎ Mars20:48 – 21:56
- 4☉︎ Sun21:56 – 23:04
- 5♀︎ Venus23:04 – 00:11
- 6☿︎ Mercury00:11 – 01:19
- 7☽︎ Moon01:19 – 02:27
- 8♄︎ Saturn02:27 – 03:35
- 9♃︎ Jupiter03:35 – 04:42
- 10♂︎ Mars04:42 – 05:50
- 11☉︎ Sun05:50 – 06:58
- 12♀︎ Venus06:58 – 08:06
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Tuesday, 17 February 2026, the Sun rises at 08:07 and sets at 18:33: the day lasts 10h 25m, that is twelve day hours of 52 min. The night, until the next sunrise at 08:06, lasts 13h 33m: twelve night hours of 1h 08m.
Which planet rules the first hour that day?
Mars, from 08:07 to 09:00: 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.