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 Thursday, 21 May 2026: day of Jupiter
- Sunrise
- 07:50
- Sunset
- 18:08
- Next sunrise
- 07:50
A day hour lasts 51 min; a night hour, 1h 09m. Local time (America/Argentina/Cordoba).
Day
- 1♃︎ Jupiter07:50 – 08:41
- 2♂︎ Mars08:41 – 09:33
- 3☉︎ Sun09:33 – 10:24
- 4♀︎ Venus10:24 – 11:16
- 5☿︎ Mercury11:16 – 12:07
- 6☽︎ Moon12:07 – 12:59
- 7♄︎ Saturn12:59 – 13:50
- 8♃︎ Jupiter13:50 – 14:42
- 9♂︎ Mars14:42 – 15:33
- 10☉︎ Sun15:33 – 16:25
- 11♀︎ Venus16:25 – 17:16
- 12☿︎ Mercury17:16 – 18:08
Night
- 1☽︎ Moon18:08 – 19:16
- 2♄︎ Saturn19:16 – 20:25
- 3♃︎ Jupiter20:25 – 21:33
- 4♂︎ Mars21:33 – 22:42
- 5☉︎ Sun22:42 – 23:50
- 6♀︎ Venus23:50 – 00:59
- 7☿︎ Mercury00:59 – 02:07
- 8☽︎ Moon02:07 – 03:16
- 9♄︎ Saturn03:16 – 04:25
- 10♃︎ Jupiter04:25 – 05:33
- 11♂︎ Mars05:33 – 06:42
- 12☉︎ Sun06:42 – 07:50
Other cities · Argentina
Questions
How are the planetary hours calculated in Rosario?
On Thursday, 21 May 2026, the Sun rises at 07:50 and sets at 18:08: the day lasts 10h 18m, that is twelve day hours of 51 min. The night, until the next sunrise at 07:50, lasts 13h 43m: twelve night hours of 1h 09m.
Which planet rules the first hour that day?
Jupiter, from 07:50 to 08:41: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.