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 Tuesday, 21 July 2026: day of Mars
- Sunrise
- 08:00
- Sunset
- 18:17
- Next sunrise
- 07:59
A day hour lasts 51 min; a night hour, 1h 09m. Local time (America/Argentina/Cordoba).
Day
- 1♂︎ Mars08:00 – 08:51
- 2☉︎ Sun08:51 – 09:43
- 3♀︎ Venus09:43 – 10:34
- 4☿︎ Mercury10:34 – 11:26
- 5☽︎ Moon11:26 – 12:17
- 6♄︎ Saturn12:17 – 13:09
- 7♃︎ Jupiter13:09 – 14:00
- 8♂︎ Mars14:00 – 14:52
- 9☉︎ Sun14:52 – 15:43
- 10♀︎ Venus15:43 – 16:34
- 11☿︎ Mercury16:34 – 17:26
- 12☽︎ Moon17:26 – 18:17
Night
- 1♄︎ Saturn18:17 – 19:26
- 2♃︎ Jupiter19:26 – 20:34
- 3♂︎ Mars20:34 – 21:43
- 4☉︎ Sun21:43 – 22:51
- 5♀︎ Venus22:51 – 00:00
- 6☿︎ Mercury00:00 – 01:08
- 7☽︎ Moon01:08 – 02:17
- 8♄︎ Saturn02:17 – 03:25
- 9♃︎ Jupiter03:25 – 04:34
- 10♂︎ Mars04:34 – 05:42
- 11☉︎ Sun05:42 – 06:51
- 12♀︎ Venus06:51 – 07:59
Other cities · Argentina
Questions
How are the planetary hours calculated in Rosario?
On Tuesday, 21 July 2026, the Sun rises at 08:00 and sets at 18:17: the day lasts 10h 17m, that is twelve day hours of 51 min. The night, until the next sunrise at 07:59, lasts 13h 42m: twelve night hours of 1h 09m.
Which planet rules the first hour that day?
Mars, from 08:00 to 08:51: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.