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, 9 December 2026: day of Mercury
- Sunrise
- 07:25
- Sunset
- 16:38
- Next sunrise
- 07:26
A day hour lasts 46 min; a night hour, 1h 14m. Local time (Europe/Rome).
Day
- 1☿︎ Mercury07:25 – 08:11
- 2☽︎ Moon08:11 – 08:57
- 3♄︎ Saturn08:57 – 09:43
- 4♃︎ Jupiter09:43 – 10:29
- 5♂︎ Mars10:29 – 11:16
- 6☉︎ Sun11:16 – 12:02
- 7♀︎ Venus12:02 – 12:48
- 8☿︎ Mercury12:48 – 13:34
- 9☽︎ Moon13:34 – 14:20
- 10♄︎ Saturn14:20 – 15:06
- 11♃︎ Jupiter15:06 – 15:52
- 12♂︎ Mars15:52 – 16:38
Night
- 1☉︎ Sun16:38 – 17:52
- 2♀︎ Venus17:52 – 19:06
- 3☿︎ Mercury19:06 – 20:20
- 4☽︎ Moon20:20 – 21:34
- 5♄︎ Saturn21:34 – 22:48
- 6♃︎ Jupiter22:48 – 00:02
- 7♂︎ Mars00:02 – 01:16
- 8☉︎ Sun01:16 – 02:30
- 9♀︎ Venus02:30 – 03:44
- 10☿︎ Mercury03:44 – 04:58
- 11☽︎ Moon04:58 – 06:12
- 12♄︎ Saturn06:12 – 07:26
Questions
How are the planetary hours calculated in Rome?
On Wednesday, 9 December 2026, the Sun rises at 07:25 and sets at 16:38: the day lasts 9h 13m, that is twelve day hours of 46 min. The night, until the next sunrise at 07:26, lasts 14h 48m: twelve night hours of 1h 14m.
Which planet rules the first hour that day?
Mercury, from 07:25 to 08:11: 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.