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, 20 December 2026: day of the Sun
- Sunrise
- 07:33
- Sunset
- 16:41
- Next sunrise
- 07:34
A day hour lasts 46 min; a night hour, 1h 14m. Local time (Europe/Rome).
Day
- 1☉︎ Sun07:33 – 08:19
- 2♀︎ Venus08:19 – 09:04
- 3☿︎ Mercury09:04 – 09:50
- 4☽︎ Moon09:50 – 10:36
- 5♄︎ Saturn10:36 – 11:21
- 6♃︎ Jupiter11:21 – 12:07
- 7♂︎ Mars12:07 – 12:53
- 8☉︎ Sun12:53 – 13:38
- 9♀︎ Venus13:38 – 14:24
- 10☿︎ Mercury14:24 – 15:10
- 11☽︎ Moon15:10 – 15:55
- 12♄︎ Saturn15:55 – 16:41
Night
- 1♃︎ Jupiter16:41 – 17:55
- 2♂︎ Mars17:55 – 19:10
- 3☉︎ Sun19:10 – 20:24
- 4♀︎ Venus20:24 – 21:38
- 5☿︎ Mercury21:38 – 22:53
- 6☽︎ Moon22:53 – 00:07
- 7♄︎ Saturn00:07 – 01:22
- 8♃︎ Jupiter01:22 – 02:36
- 9♂︎ Mars02:36 – 03:50
- 10☉︎ Sun03:50 – 05:05
- 11♀︎ Venus05:05 – 06:19
- 12☿︎ Mercury06:19 – 07:34
Questions
How are the planetary hours calculated in Rome?
On Sunday, 20 December 2026, the Sun rises at 07:33 and sets at 16:41: the day lasts 9h 08m, that is twelve day hours of 46 min. The night, until the next sunrise at 07:34, lasts 14h 53m: twelve night hours of 1h 14m.
Which planet rules the first hour that day?
The Sun, from 07:33 to 08:19: 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.