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 Tuesday, 12 May 2026: day of Mars
- Sunrise
- 05:53
- Sunset
- 20:20
- Next sunrise
- 05:52
A day hour lasts 1h 12m; a night hour, 48 min. Local time (Europe/Rome).
Day
- 1♂︎ Mars05:53 – 07:05
- 2☉︎ Sun07:05 – 08:17
- 3♀︎ Venus08:17 – 09:29
- 4☿︎ Mercury09:29 – 10:42
- 5☽︎ Moon10:42 – 11:54
- 6♄︎ Saturn11:54 – 13:06
- 7♃︎ Jupiter13:06 – 14:18
- 8♂︎ Mars14:18 – 15:31
- 9☉︎ Sun15:31 – 16:43
- 10♀︎ Venus16:43 – 17:55
- 11☿︎ Mercury17:55 – 19:07
- 12☽︎ Moon19:07 – 20:20
Night
- 1♄︎ Saturn20:20 – 21:07
- 2♃︎ Jupiter21:07 – 21:55
- 3♂︎ Mars21:55 – 22:43
- 4☉︎ Sun22:43 – 23:30
- 5♀︎ Venus23:30 – 00:18
- 6☿︎ Mercury00:18 – 01:06
- 7☽︎ Moon01:06 – 01:53
- 8♄︎ Saturn01:53 – 02:41
- 9♃︎ Jupiter02:41 – 03:29
- 10♂︎ Mars03:29 – 04:16
- 11☉︎ Sun04:16 – 05:04
- 12♀︎ Venus05:04 – 05:52
Questions
How are the planetary hours calculated in Rome?
On Tuesday, 12 May 2026, the Sun rises at 05:53 and sets at 20:20: the day lasts 14h 27m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 05:52, lasts 9h 32m: twelve night hours of 48 min.
Which planet rules the first hour that day?
Mars, from 05:53 to 07:05: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.