Planetary hours
in Rome.
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 Thursday, 16 December 2027: day of Jupiter
- Sunrise
- 07:30
- Sunset
- 16:39
- Next sunrise
- 07:31
A day hour lasts 46 min; a night hour, 1h 14m. Local time (Europe/Rome).
Day
- 1♃︎ Jupiter07:30 – 08:16
- 2♂︎ Mars08:16 – 09:02
- 3☉︎ Sun09:02 – 09:48
- 4♀︎ Venus09:48 – 10:33
- 5☿︎ Mercury10:33 – 11:19
- 6☽︎ Moon11:19 – 12:05
- 7♄︎ Saturn12:05 – 12:51
- 8♃︎ Jupiter12:51 – 13:36
- 9♂︎ Mars13:36 – 14:22
- 10☉︎ Sun14:22 – 15:08
- 11♀︎ Venus15:08 – 15:54
- 12☿︎ Mercury15:54 – 16:39
Night
- 1☽︎ Moon16:39 – 17:54
- 2♄︎ Saturn17:54 – 19:08
- 3♃︎ Jupiter19:08 – 20:22
- 4♂︎ Mars20:22 – 21:37
- 5☉︎ Sun21:37 – 22:51
- 6♀︎ Venus22:51 – 00:05
- 7☿︎ Mercury00:05 – 01:20
- 8☽︎ Moon01:20 – 02:34
- 9♄︎ Saturn02:34 – 03:48
- 10♃︎ Jupiter03:48 – 05:03
- 11♂︎ Mars05:03 – 06:17
- 12☉︎ Sun06:17 – 07:31
Questions
How are the planetary hours calculated in Rome?
On Thursday, 16 December 2027, the Sun rises at 07:30 and sets at 16:39: the day lasts 9h 09m, that is twelve day hours of 46 min. The night, until the next sunrise at 07:31, lasts 14h 52m: twelve night hours of 1h 14m.
Which planet rules the first hour that day?
Jupiter, from 07:30 to 08:16: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.