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 Sunday, 13 December 2026: day of the Sun
- Sunrise
- 07:40
- Sunset
- 16:37
- Next sunrise
- 07:41
A day hour lasts 45 min; a night hour, 1h 15m. Local time (Europe/Rome).
Day
- 1☉︎ Sun07:40 – 08:25
- 2♀︎ Venus08:25 – 09:09
- 3☿︎ Mercury09:09 – 09:54
- 4☽︎ Moon09:54 – 10:39
- 5♄︎ Saturn10:39 – 11:24
- 6♃︎ Jupiter11:24 – 12:09
- 7♂︎ Mars12:09 – 12:53
- 8☉︎ Sun12:53 – 13:38
- 9♀︎ Venus13:38 – 14:23
- 10☿︎ Mercury14:23 – 15:08
- 11☽︎ Moon15:08 – 15:53
- 12♄︎ Saturn15:53 – 16:37
Night
- 1♃︎ Jupiter16:37 – 17:53
- 2♂︎ Mars17:53 – 19:08
- 3☉︎ Sun19:08 – 20:23
- 4♀︎ Venus20:23 – 21:38
- 5☿︎ Mercury21:38 – 22:54
- 6☽︎ Moon22:54 – 00:09
- 7♄︎ Saturn00:09 – 01:24
- 8♃︎ Jupiter01:24 – 02:40
- 9♂︎ Mars02:40 – 03:55
- 10☉︎ Sun03:55 – 05:10
- 11♀︎ Venus05:10 – 06:25
- 12☿︎ Mercury06:25 – 07:41
Questions
How are the planetary hours calculated in Florence?
On Sunday, 13 December 2026, the Sun rises at 07:40 and sets at 16:37: the day lasts 8h 58m, that is twelve day hours of 45 min. The night, until the next sunrise at 07:41, lasts 15h 03m: twelve night hours of 1h 15m.
Which planet rules the first hour that day?
The Sun, from 07:40 to 08:25: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.