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 Sunday, 3 August 2025: day of the Sun
- Sunrise
- 06:05
- Sunset
- 20:25
- Next sunrise
- 06:06
A day hour lasts 1h 12m; a night hour, 48 min. Local time (Europe/Rome).
Day
- 1☉︎ Sun06:05 – 07:17
- 2♀︎ Venus07:17 – 08:29
- 3☿︎ Mercury08:29 – 09:40
- 4☽︎ Moon09:40 – 10:52
- 5♄︎ Saturn10:52 – 12:04
- 6♃︎ Jupiter12:04 – 13:15
- 7♂︎ Mars13:15 – 14:27
- 8☉︎ Sun14:27 – 15:39
- 9♀︎ Venus15:39 – 16:50
- 10☿︎ Mercury16:50 – 18:02
- 11☽︎ Moon18:02 – 19:14
- 12♄︎ Saturn19:14 – 20:25
Night
- 1♃︎ Jupiter20:25 – 21:14
- 2♂︎ Mars21:14 – 22:02
- 3☉︎ Sun22:02 – 22:51
- 4♀︎ Venus22:51 – 23:39
- 5☿︎ Mercury23:39 – 00:27
- 6☽︎ Moon00:27 – 01:16
- 7♄︎ Saturn01:16 – 02:04
- 8♃︎ Jupiter02:04 – 02:53
- 9♂︎ Mars02:53 – 03:41
- 10☉︎ Sun03:41 – 04:29
- 11♀︎ Venus04:29 – 05:18
- 12☿︎ Mercury05:18 – 06:06
Questions
How are the planetary hours calculated in Rome?
On Sunday, 3 August 2025, the Sun rises at 06:05 and sets at 20:25: the day lasts 14h 20m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 06:06, lasts 9h 41m: twelve night hours of 48 min.
Which planet rules the first hour that day?
The Sun, from 06:05 to 07:17: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.