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 Saturday, 18 July 2026: day of Saturn
- Sunrise
- 05:50
- Sunset
- 20:41
- Next sunrise
- 05:51
A day hour lasts 1h 14m; a night hour, 46 min. Local time (Europe/Rome).
Day
- 1♄︎ Saturn05:50 – 07:04
- 2♃︎ Jupiter07:04 – 08:18
- 3♂︎ Mars08:18 – 09:33
- 4☉︎ Sun09:33 – 10:47
- 5♀︎ Venus10:47 – 12:01
- 6☿︎ Mercury12:01 – 13:15
- 7☽︎ Moon13:15 – 14:30
- 8♄︎ Saturn14:30 – 15:44
- 9♃︎ Jupiter15:44 – 16:58
- 10♂︎ Mars16:58 – 18:13
- 11☉︎ Sun18:13 – 19:27
- 12♀︎ Venus19:27 – 20:41
Night
- 1☿︎ Mercury20:41 – 21:27
- 2☽︎ Moon21:27 – 22:13
- 3♄︎ Saturn22:13 – 22:58
- 4♃︎ Jupiter22:58 – 23:44
- 5♂︎ Mars23:44 – 00:30
- 6☉︎ Sun00:30 – 01:16
- 7♀︎ Venus01:16 – 02:02
- 8☿︎ Mercury02:02 – 02:48
- 9☽︎ Moon02:48 – 03:33
- 10♄︎ Saturn03:33 – 04:19
- 11♃︎ Jupiter04:19 – 05:05
- 12♂︎ Mars05:05 – 05:51
Questions
How are the planetary hours calculated in Rome?
On Saturday, 18 July 2026, the Sun rises at 05:50 and sets at 20:41: the day lasts 14h 51m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 05:51, lasts 9h 10m: twelve night hours of 46 min.
Which planet rules the first hour that day?
Saturn, from 05:50 to 07:04: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.