Planetary hours
in Trieste.
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, 15 October 2025: day of Mercury
- Sunrise
- 07:21
- Sunset
- 18:19
- Next sunrise
- 07:22
A day hour lasts 55 min; a night hour, 1h 05m. Local time (Europe/Rome).
Day
- 1☿︎ Mercury07:21 – 08:16
- 2☽︎ Moon08:16 – 09:11
- 3♄︎ Saturn09:11 – 10:05
- 4♃︎ Jupiter10:05 – 11:00
- 5♂︎ Mars11:00 – 11:55
- 6☉︎ Sun11:55 – 12:50
- 7♀︎ Venus12:50 – 13:45
- 8☿︎ Mercury13:45 – 14:39
- 9☽︎ Moon14:39 – 15:34
- 10♄︎ Saturn15:34 – 16:29
- 11♃︎ Jupiter16:29 – 17:24
- 12♂︎ Mars17:24 – 18:19
Night
- 1☉︎ Sun18:19 – 19:24
- 2♀︎ Venus19:24 – 20:29
- 3☿︎ Mercury20:29 – 21:34
- 4☽︎ Moon21:34 – 22:40
- 5♄︎ Saturn22:40 – 23:45
- 6♃︎ Jupiter23:45 – 00:50
- 7♂︎ Mars00:50 – 01:56
- 8☉︎ Sun01:56 – 03:01
- 9♀︎ Venus03:01 – 04:06
- 10☿︎ Mercury04:06 – 05:12
- 11☽︎ Moon05:12 – 06:17
- 12♄︎ Saturn06:17 – 07:22
Questions
How are the planetary hours calculated in Trieste?
On Wednesday, 15 October 2025, the Sun rises at 07:21 and sets at 18:19: the day lasts 10h 58m, that is twelve day hours of 55 min. The night, until the next sunrise at 07:22, lasts 13h 04m: twelve night hours of 1h 05m.
Which planet rules the first hour that day?
Mercury, from 07:21 to 08:16: 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.