Planetary hours
in Rosario.
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, 24 December 2025: day of Mercury
- Sunrise
- 05:52
- Sunset
- 20:12
- Next sunrise
- 05:53
A day hour lasts 1h 12m; a night hour, 48 min. Local time (America/Argentina/Cordoba).
Day
- 1☿︎ Mercury05:52 – 07:04
- 2☽︎ Moon07:04 – 08:15
- 3♄︎ Saturn08:15 – 09:27
- 4♃︎ Jupiter09:27 – 10:39
- 5♂︎ Mars10:39 – 11:50
- 6☉︎ Sun11:50 – 13:02
- 7♀︎ Venus13:02 – 14:13
- 8☿︎ Mercury14:13 – 15:25
- 9☽︎ Moon15:25 – 16:37
- 10♄︎ Saturn16:37 – 17:48
- 11♃︎ Jupiter17:48 – 19:00
- 12♂︎ Mars19:00 – 20:12
Night
- 1☉︎ Sun20:12 – 21:00
- 2♀︎ Venus21:00 – 21:48
- 3☿︎ Mercury21:48 – 22:37
- 4☽︎ Moon22:37 – 23:25
- 5♄︎ Saturn23:25 – 00:14
- 6♃︎ Jupiter00:14 – 01:02
- 7♂︎ Mars01:02 – 01:50
- 8☉︎ Sun01:50 – 02:39
- 9♀︎ Venus02:39 – 03:27
- 10☿︎ Mercury03:27 – 04:16
- 11☽︎ Moon04:16 – 05:04
- 12♄︎ Saturn05:04 – 05:53
Other cities · Argentina
Questions
How are the planetary hours calculated in Rosario?
On Wednesday, 24 December 2025, the Sun rises at 05:52 and sets at 20:12: the day lasts 14h 20m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 05:53, lasts 9h 41m: twelve night hours of 48 min.
Which planet rules the first hour that day?
Mercury, from 05:52 to 07:04: 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.