Planetary hours
in Milan.
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, 17 December 2025: day of Mercury
- Sunrise
- 07:57
- Sunset
- 16:41
- Next sunrise
- 07:58
A day hour lasts 44 min; a night hour, 1h 16m. Local time (Europe/Rome).
Day
- 1☿︎ Mercury07:57 – 08:41
- 2☽︎ Moon08:41 – 09:24
- 3♄︎ Saturn09:24 – 10:08
- 4♃︎ Jupiter10:08 – 10:52
- 5♂︎ Mars10:52 – 11:35
- 6☉︎ Sun11:35 – 12:19
- 7♀︎ Venus12:19 – 13:03
- 8☿︎ Mercury13:03 – 13:46
- 9☽︎ Moon13:46 – 14:30
- 10♄︎ Saturn14:30 – 15:13
- 11♃︎ Jupiter15:13 – 15:57
- 12♂︎ Mars15:57 – 16:41
Night
- 1☉︎ Sun16:41 – 17:57
- 2♀︎ Venus17:57 – 19:13
- 3☿︎ Mercury19:13 – 20:30
- 4☽︎ Moon20:30 – 21:46
- 5♄︎ Saturn21:46 – 23:03
- 6♃︎ Jupiter23:03 – 00:19
- 7♂︎ Mars00:19 – 01:36
- 8☉︎ Sun01:36 – 02:52
- 9♀︎ Venus02:52 – 04:09
- 10☿︎ Mercury04:09 – 05:25
- 11☽︎ Moon05:25 – 06:41
- 12♄︎ Saturn06:41 – 07:58
Questions
How are the planetary hours calculated in Milan?
On Wednesday, 17 December 2025, the Sun rises at 07:57 and sets at 16:41: the day lasts 8h 43m, that is twelve day hours of 44 min. The night, until the next sunrise at 07:58, lasts 15h 17m: twelve night hours of 1h 16m.
Which planet rules the first hour that day?
Mercury, from 07:57 to 08:41: 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.