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 Saturday, 16 August 2025: day of Saturn
- Sunrise
- 07:38
- Sunset
- 18:35
- Next sunrise
- 07:37
A day hour lasts 55 min; a night hour, 1h 05m. Local time (America/Argentina/Cordoba).
Day
- 1♄︎ Saturn07:38 – 08:33
- 2♃︎ Jupiter08:33 – 09:28
- 3♂︎ Mars09:28 – 10:22
- 4☉︎ Sun10:22 – 11:17
- 5♀︎ Venus11:17 – 12:12
- 6☿︎ Mercury12:12 – 13:06
- 7☽︎ Moon13:06 – 14:01
- 8♄︎ Saturn14:01 – 14:56
- 9♃︎ Jupiter14:56 – 15:51
- 10♂︎ Mars15:51 – 16:45
- 11☉︎ Sun16:45 – 17:40
- 12♀︎ Venus17:40 – 18:35
Night
- 1☿︎ Mercury18:35 – 19:40
- 2☽︎ Moon19:40 – 20:45
- 3♄︎ Saturn20:45 – 21:50
- 4♃︎ Jupiter21:50 – 22:56
- 5♂︎ Mars22:56 – 00:01
- 6☉︎ Sun00:01 – 01:06
- 7♀︎ Venus01:06 – 02:11
- 8☿︎ Mercury02:11 – 03:16
- 9☽︎ Moon03:16 – 04:22
- 10♄︎ Saturn04:22 – 05:27
- 11♃︎ Jupiter05:27 – 06:32
- 12♂︎ Mars06:32 – 07:37
Other cities · Argentina
Questions
How are the planetary hours calculated in Rosario?
On Saturday, 16 August 2025, the Sun rises at 07:38 and sets at 18:35: the day lasts 10h 57m, that is twelve day hours of 55 min. The night, until the next sunrise at 07:37, lasts 13h 02m: twelve night hours of 1h 05m.
Which planet rules the first hour that day?
Saturn, from 07:38 to 08:33: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.