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, 7 January 2026: day of Mercury
- Sunrise
- 07:37
- Sunset
- 16:55
- Next sunrise
- 07:37
A day hour lasts 46 min; a night hour, 1h 14m. Local time (Europe/Rome).
Day
- 1☿︎ Mercury07:37 – 08:24
- 2☽︎ Moon08:24 – 09:10
- 3♄︎ Saturn09:10 – 09:56
- 4♃︎ Jupiter09:56 – 10:43
- 5♂︎ Mars10:43 – 11:29
- 6☉︎ Sun11:29 – 12:16
- 7♀︎ Venus12:16 – 13:02
- 8☿︎ Mercury13:02 – 13:49
- 9☽︎ Moon13:49 – 14:35
- 10♄︎ Saturn14:35 – 15:22
- 11♃︎ Jupiter15:22 – 16:08
- 12♂︎ Mars16:08 – 16:55
Night
- 1☉︎ Sun16:55 – 18:08
- 2♀︎ Venus18:08 – 19:22
- 3☿︎ Mercury19:22 – 20:35
- 4☽︎ Moon20:35 – 21:49
- 5♄︎ Saturn21:49 – 23:02
- 6♃︎ Jupiter23:02 – 00:16
- 7♂︎ Mars00:16 – 01:29
- 8☉︎ Sun01:29 – 02:43
- 9♀︎ Venus02:43 – 03:56
- 10☿︎ Mercury03:56 – 05:10
- 11☽︎ Moon05:10 – 06:23
- 12♄︎ Saturn06:23 – 07:37
Questions
How are the planetary hours calculated in Rome?
On Wednesday, 7 January 2026, the Sun rises at 07:37 and sets at 16:55: the day lasts 9h 18m, that is twelve day hours of 46 min. The night, until the next sunrise at 07:37, lasts 14h 42m: twelve night hours of 1h 14m.
Which planet rules the first hour that day?
Mercury, from 07:37 to 08:24: 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.