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 Tuesday, 15 December 2026: day of Mars
- Sunrise
- 07:41
- Sunset
- 16:38
- Next sunrise
- 07:42
A day hour lasts 45 min; a night hour, 1h 15m. Local time (Europe/Rome).
Day
- 1♂︎ Mars07:41 – 08:26
- 2☉︎ Sun08:26 – 09:11
- 3♀︎ Venus09:11 – 09:55
- 4☿︎ Mercury09:55 – 10:40
- 5☽︎ Moon10:40 – 11:25
- 6♄︎ Saturn11:25 – 12:10
- 7♃︎ Jupiter12:10 – 12:54
- 8♂︎ Mars12:54 – 13:39
- 9☉︎ Sun13:39 – 14:24
- 10♀︎ Venus14:24 – 15:08
- 11☿︎ Mercury15:08 – 15:53
- 12☽︎ Moon15:53 – 16:38
Night
- 1♄︎ Saturn16:38 – 17:53
- 2♃︎ Jupiter17:53 – 19:08
- 3♂︎ Mars19:08 – 20:24
- 4☉︎ Sun20:24 – 21:39
- 5♀︎ Venus21:39 – 22:55
- 6☿︎ Mercury22:55 – 00:10
- 7☽︎ Moon00:10 – 01:25
- 8♄︎ Saturn01:25 – 02:41
- 9♃︎ Jupiter02:41 – 03:56
- 10♂︎ Mars03:56 – 05:11
- 11☉︎ Sun05:11 – 06:27
- 12♀︎ Venus06:27 – 07:42
Questions
How are the planetary hours calculated in Florence?
On Tuesday, 15 December 2026, the Sun rises at 07:41 and sets at 16:38: the day lasts 8h 56m, that is twelve day hours of 45 min. The night, until the next sunrise at 07:42, lasts 15h 04m: twelve night hours of 1h 15m.
Which planet rules the first hour that day?
Mars, from 07:41 to 08:26: 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.