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, 3 December 2025: day of Mercury
- Sunrise
- 07:20
- Sunset
- 16:39
- Next sunrise
- 07:21
A day hour lasts 47 min; a night hour, 1h 13m. Local time (Europe/Rome).
Day
- 1☿︎ Mercury07:20 – 08:06
- 2☽︎ Moon08:06 – 08:53
- 3♄︎ Saturn08:53 – 09:39
- 4♃︎ Jupiter09:39 – 10:26
- 5♂︎ Mars10:26 – 11:13
- 6☉︎ Sun11:13 – 11:59
- 7♀︎ Venus11:59 – 12:46
- 8☿︎ Mercury12:46 – 13:32
- 9☽︎ Moon13:32 – 14:19
- 10♄︎ Saturn14:19 – 15:06
- 11♃︎ Jupiter15:06 – 15:52
- 12♂︎ Mars15:52 – 16:39
Night
- 1☉︎ Sun16:39 – 17:52
- 2♀︎ Venus17:52 – 19:06
- 3☿︎ Mercury19:06 – 20:19
- 4☽︎ Moon20:19 – 21:33
- 5♄︎ Saturn21:33 – 22:46
- 6♃︎ Jupiter22:46 – 00:00
- 7♂︎ Mars00:00 – 01:13
- 8☉︎ Sun01:13 – 02:27
- 9♀︎ Venus02:27 – 03:40
- 10☿︎ Mercury03:40 – 04:54
- 11☽︎ Moon04:54 – 06:07
- 12♄︎ Saturn06:07 – 07:21
Questions
How are the planetary hours calculated in Rome?
On Wednesday, 3 December 2025, the Sun rises at 07:20 and sets at 16:39: the day lasts 9h 19m, that is twelve day hours of 47 min. The night, until the next sunrise at 07:21, lasts 14h 42m: twelve night hours of 1h 13m.
Which planet rules the first hour that day?
Mercury, from 07:20 to 08:06: 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.