Planetary hours
in Florence.
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 Saturday, 18 October 2025: day of Saturn
- Sunrise
- 07:33
- Sunset
- 18:26
- Next sunrise
- 07:34
A day hour lasts 54 min; a night hour, 1h 06m. Local time (Europe/Rome).
Day
- 1♄︎ Saturn07:33 – 08:27
- 2♃︎ Jupiter08:27 – 09:22
- 3♂︎ Mars09:22 – 10:16
- 4☉︎ Sun10:16 – 11:10
- 5♀︎ Venus11:10 – 12:05
- 6☿︎ Mercury12:05 – 12:59
- 7☽︎ Moon12:59 – 13:54
- 8♄︎ Saturn13:54 – 14:48
- 9♃︎ Jupiter14:48 – 15:43
- 10♂︎ Mars15:43 – 16:37
- 11☉︎ Sun16:37 – 17:31
- 12♀︎ Venus17:31 – 18:26
Night
- 1☿︎ Mercury18:26 – 19:32
- 2☽︎ Moon19:32 – 20:37
- 3♄︎ Saturn20:37 – 21:43
- 4♃︎ Jupiter21:43 – 22:49
- 5♂︎ Mars22:49 – 23:54
- 6☉︎ Sun23:54 – 01:00
- 7♀︎ Venus01:00 – 02:06
- 8☿︎ Mercury02:06 – 03:11
- 9☽︎ Moon03:11 – 04:17
- 10♄︎ Saturn04:17 – 05:23
- 11♃︎ Jupiter05:23 – 06:28
- 12♂︎ Mars06:28 – 07:34
Questions
How are the planetary hours calculated in Florence?
On Saturday, 18 October 2025, the Sun rises at 07:33 and sets at 18:26: the day lasts 10h 53m, that is twelve day hours of 54 min. The night, until the next sunrise at 07:34, lasts 13h 08m: twelve night hours of 1h 06m.
Which planet rules the first hour that day?
Saturn, from 07:33 to 08:27: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.