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 Sunday, 18 January 2026: day of the Sun
- Sunrise
- 07:39
- Sunset
- 16:51
- Next sunrise
- 07:39
A day hour lasts 46 min; a night hour, 1h 14m. Local time (Europe/Rome).
Day
- 1☉︎ Sun07:39 – 08:25
- 2♀︎ Venus08:25 – 09:11
- 3☿︎ Mercury09:11 – 09:57
- 4☽︎ Moon09:57 – 10:43
- 5♄︎ Saturn10:43 – 11:29
- 6♃︎ Jupiter11:29 – 12:15
- 7♂︎ Mars12:15 – 13:01
- 8☉︎ Sun13:01 – 13:47
- 9♀︎ Venus13:47 – 14:33
- 10☿︎ Mercury14:33 – 15:19
- 11☽︎ Moon15:19 – 16:05
- 12♄︎ Saturn16:05 – 16:51
Night
- 1♃︎ Jupiter16:51 – 18:05
- 2♂︎ Mars18:05 – 19:19
- 3☉︎ Sun19:19 – 20:33
- 4♀︎ Venus20:33 – 21:47
- 5☿︎ Mercury21:47 – 23:01
- 6☽︎ Moon23:01 – 00:15
- 7♄︎ Saturn00:15 – 01:29
- 8♃︎ Jupiter01:29 – 02:43
- 9♂︎ Mars02:43 – 03:57
- 10☉︎ Sun03:57 – 05:11
- 11♀︎ Venus05:11 – 06:25
- 12☿︎ Mercury06:25 – 07:39
Questions
How are the planetary hours calculated in Trieste?
On Sunday, 18 January 2026, the Sun rises at 07:39 and sets at 16:51: the day lasts 9h 11m, that is twelve day hours of 46 min. The night, until the next sunrise at 07:39, lasts 14h 48m: twelve night hours of 1h 14m.
Which planet rules the first hour that day?
The Sun, from 07:39 to 08:25: 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.