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, 18 August 2026: day of Mars
- Sunrise
- 07:36
- Sunset
- 18:36
- Next sunrise
- 07:35
A day hour lasts 55 min; a night hour, 1h 05m. Local time (America/Argentina/Cordoba).
Day
- 1♂︎ Mars07:36 – 08:31
- 2☉︎ Sun08:31 – 09:26
- 3♀︎ Venus09:26 – 10:21
- 4☿︎ Mercury10:21 – 11:16
- 5☽︎ Moon11:16 – 12:11
- 6♄︎ Saturn12:11 – 13:06
- 7♃︎ Jupiter13:06 – 14:01
- 8♂︎ Mars14:01 – 14:56
- 9☉︎ Sun14:56 – 15:51
- 10♀︎ Venus15:51 – 16:46
- 11☿︎ Mercury16:46 – 17:41
- 12☽︎ Moon17:41 – 18:36
Night
- 1♄︎ Saturn18:36 – 19:41
- 2♃︎ Jupiter19:41 – 20:46
- 3♂︎ Mars20:46 – 21:51
- 4☉︎ Sun21:51 – 22:56
- 5♀︎ Venus22:56 – 00:01
- 6☿︎ Mercury00:01 – 01:06
- 7☽︎ Moon01:06 – 02:10
- 8♄︎ Saturn02:10 – 03:15
- 9♃︎ Jupiter03:15 – 04:20
- 10♂︎ Mars04:20 – 05:25
- 11☉︎ Sun05:25 – 06:30
- 12♀︎ Venus06:30 – 07:35
Other cities · Argentina
Questions
How are the planetary hours calculated in Rosario?
On Tuesday, 18 August 2026, the Sun rises at 07:36 and sets at 18:36: the day lasts 11h 00m, that is twelve day hours of 55 min. The night, until the next sunrise at 07:35, lasts 12h 59m: twelve night hours of 1h 05m.
Which planet rules the first hour that day?
Mars, from 07:36 to 08:31: 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.