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 Friday, 18 December 2026: day of Venus
- Sunrise
- 05:49
- Sunset
- 20:09
- Next sunrise
- 05:49
A day hour lasts 1h 12m; a night hour, 48 min. Local time (America/Argentina/Cordoba).
Day
- 1♀︎ Venus05:49 – 07:01
- 2☿︎ Mercury07:01 – 08:12
- 3☽︎ Moon08:12 – 09:24
- 4♄︎ Saturn09:24 – 10:35
- 5♃︎ Jupiter10:35 – 11:47
- 6♂︎ Mars11:47 – 12:59
- 7☉︎ Sun12:59 – 14:10
- 8♀︎ Venus14:10 – 15:22
- 9☿︎ Mercury15:22 – 16:34
- 10☽︎ Moon16:34 – 17:45
- 11♄︎ Saturn17:45 – 18:57
- 12♃︎ Jupiter18:57 – 20:09
Night
- 1♂︎ Mars20:09 – 20:57
- 2☉︎ Sun20:57 – 21:45
- 3♀︎ Venus21:45 – 22:34
- 4☿︎ Mercury22:34 – 23:22
- 5☽︎ Moon23:22 – 00:11
- 6♄︎ Saturn00:11 – 00:59
- 7♃︎ Jupiter00:59 – 01:47
- 8♂︎ Mars01:47 – 02:36
- 9☉︎ Sun02:36 – 03:24
- 10♀︎ Venus03:24 – 04:13
- 11☿︎ Mercury04:13 – 05:01
- 12☽︎ Moon05:01 – 05:49
Other cities · Argentina
Questions
How are the planetary hours calculated in Rosario?
On Friday, 18 December 2026, the Sun rises at 05:49 and sets at 20:09: the day lasts 14h 20m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 05:49, lasts 9h 41m: twelve night hours of 48 min.
Which planet rules the first hour that day?
Venus, from 05:49 to 07:01: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.