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 Friday, 17 July 2026: day of Venus
- Sunrise
- 05:49
- Sunset
- 20:42
- Next sunrise
- 05:50
A day hour lasts 1h 14m; a night hour, 46 min. Local time (Europe/Rome).
Day
- 1♀︎ Venus05:49 – 07:03
- 2☿︎ Mercury07:03 – 08:18
- 3☽︎ Moon08:18 – 09:32
- 4♄︎ Saturn09:32 – 10:47
- 5♃︎ Jupiter10:47 – 12:01
- 6♂︎ Mars12:01 – 13:15
- 7☉︎ Sun13:15 – 14:30
- 8♀︎ Venus14:30 – 15:44
- 9☿︎ Mercury15:44 – 16:59
- 10☽︎ Moon16:59 – 18:13
- 11♄︎ Saturn18:13 – 19:27
- 12♃︎ Jupiter19:27 – 20:42
Night
- 1♂︎ Mars20:42 – 21:27
- 2☉︎ Sun21:27 – 22:13
- 3♀︎ Venus22:13 – 22:59
- 4☿︎ Mercury22:59 – 23:44
- 5☽︎ Moon23:44 – 00:30
- 6♄︎ Saturn00:30 – 01:16
- 7♃︎ Jupiter01:16 – 02:02
- 8♂︎ Mars02:02 – 02:47
- 9☉︎ Sun02:47 – 03:33
- 10♀︎ Venus03:33 – 04:19
- 11☿︎ Mercury04:19 – 05:04
- 12☽︎ Moon05:04 – 05:50
Questions
How are the planetary hours calculated in Rome?
On Friday, 17 July 2026, the Sun rises at 05:49 and sets at 20:42: the day lasts 14h 53m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 05:50, lasts 9h 08m: twelve night hours of 46 min.
Which planet rules the first hour that day?
Venus, from 05:49 to 07:03: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.