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 Wednesday, 16 September 2026: day of Mercury
- Sunrise
- 06:50
- Sunset
- 19:17
- Next sunrise
- 06:51
A day hour lasts 1h 02m; a night hour, 58 min. Local time (Europe/Rome).
Day
- 1☿︎ Mercury06:50 – 07:53
- 2☽︎ Moon07:53 – 08:55
- 3♄︎ Saturn08:55 – 09:57
- 4♃︎ Jupiter09:57 – 10:59
- 5♂︎ Mars10:59 – 12:02
- 6☉︎ Sun12:02 – 13:04
- 7♀︎ Venus13:04 – 14:06
- 8☿︎ Mercury14:06 – 15:08
- 9☽︎ Moon15:08 – 16:11
- 10♄︎ Saturn16:11 – 17:13
- 11♃︎ Jupiter17:13 – 18:15
- 12♂︎ Mars18:15 – 19:17
Night
- 1☉︎ Sun19:17 – 20:15
- 2♀︎ Venus20:15 – 21:13
- 3☿︎ Mercury21:13 – 22:11
- 4☽︎ Moon22:11 – 23:09
- 5♄︎ Saturn23:09 – 00:07
- 6♃︎ Jupiter00:07 – 01:04
- 7♂︎ Mars01:04 – 02:02
- 8☉︎ Sun02:02 – 03:00
- 9♀︎ Venus03:00 – 03:58
- 10☿︎ Mercury03:58 – 04:56
- 11☽︎ Moon04:56 – 05:54
- 12♄︎ Saturn05:54 – 06:51
Questions
How are the planetary hours calculated in Rome?
On Wednesday, 16 September 2026, the Sun rises at 06:50 and sets at 19:17: the day lasts 12h 27m, that is twelve day hours of 1h 02m. The night, until the next sunrise at 06:51, lasts 11h 34m: twelve night hours of 58 min.
Which planet rules the first hour that day?
Mercury, from 06:50 to 07:53: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.