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 Wednesday, 15 December 2027: day of Mercury
- Sunrise
- 07:30
- Sunset
- 16:39
- Next sunrise
- 07:30
A day hour lasts 46 min; a night hour, 1h 14m. Local time (Europe/Rome).
Day
- 1☿︎ Mercury07:30 – 08:16
- 2☽︎ Moon08:16 – 09:01
- 3♄︎ Saturn09:01 – 09:47
- 4♃︎ Jupiter09:47 – 10:33
- 5♂︎ Mars10:33 – 11:19
- 6☉︎ Sun11:19 – 12:04
- 7♀︎ Venus12:04 – 12:50
- 8☿︎ Mercury12:50 – 13:36
- 9☽︎ Moon13:36 – 14:22
- 10♄︎ Saturn14:22 – 15:07
- 11♃︎ Jupiter15:07 – 15:53
- 12♂︎ Mars15:53 – 16:39
Night
- 1☉︎ Sun16:39 – 17:53
- 2♀︎ Venus17:53 – 19:08
- 3☿︎ Mercury19:08 – 20:22
- 4☽︎ Moon20:22 – 21:36
- 5♄︎ Saturn21:36 – 22:50
- 6♃︎ Jupiter22:50 – 00:05
- 7♂︎ Mars00:05 – 01:19
- 8☉︎ Sun01:19 – 02:33
- 9♀︎ Venus02:33 – 03:48
- 10☿︎ Mercury03:48 – 05:02
- 11☽︎ Moon05:02 – 06:16
- 12♄︎ Saturn06:16 – 07:30
Questions
How are the planetary hours calculated in Rome?
On Wednesday, 15 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 07:30, lasts 14h 51m: twelve night hours of 1h 14m.
Which planet rules the first hour that day?
Mercury, 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: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.