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 Monday, 18 August 2025: day of the Moon
- Sunrise
- 06:21
- Sunset
- 20:05
- Next sunrise
- 06:22
A day hour lasts 1h 09m; a night hour, 51 min. Local time (Europe/Rome).
Day
- 1☽︎ Moon06:21 – 07:29
- 2♄︎ Saturn07:29 – 08:38
- 3♃︎ Jupiter08:38 – 09:47
- 4♂︎ Mars09:47 – 10:56
- 5☉︎ Sun10:56 – 12:04
- 6♀︎ Venus12:04 – 13:13
- 7☿︎ Mercury13:13 – 14:22
- 8☽︎ Moon14:22 – 15:30
- 9♄︎ Saturn15:30 – 16:39
- 10♃︎ Jupiter16:39 – 17:48
- 11♂︎ Mars17:48 – 18:56
- 12☉︎ Sun18:56 – 20:05
Night
- 1♀︎ Venus20:05 – 20:56
- 2☿︎ Mercury20:56 – 21:48
- 3☽︎ Moon21:48 – 22:39
- 4♄︎ Saturn22:39 – 23:31
- 5♃︎ Jupiter23:31 – 00:22
- 6♂︎ Mars00:22 – 01:13
- 7☉︎ Sun01:13 – 02:05
- 8♀︎ Venus02:05 – 02:56
- 9☿︎ Mercury02:56 – 03:48
- 10☽︎ Moon03:48 – 04:39
- 11♄︎ Saturn04:39 – 05:30
- 12♃︎ Jupiter05:30 – 06:22
Questions
How are the planetary hours calculated in Rome?
On Monday, 18 August 2025, the Sun rises at 06:21 and sets at 20:05: the day lasts 13h 44m, that is twelve day hours of 1h 09m. The night, until the next sunrise at 06:22, lasts 10h 17m: twelve night hours of 51 min.
Which planet rules the first hour that day?
The Moon, from 06:21 to 07:29: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.