Planetary hours
in Buenos Aires.
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, 12 December 2026: day of Saturn
- Sunrise
- 05:34
- Sunset
- 20:00
- Next sunrise
- 05:34
A day hour lasts 1h 12m; a night hour, 48 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1♄︎ Saturn05:34 – 06:46
- 2♃︎ Jupiter06:46 – 07:58
- 3♂︎ Mars07:58 – 09:10
- 4☉︎ Sun09:10 – 10:22
- 5♀︎ Venus10:22 – 11:35
- 6☿︎ Mercury11:35 – 12:47
- 7☽︎ Moon12:47 – 13:59
- 8♄︎ Saturn13:59 – 15:11
- 9♃︎ Jupiter15:11 – 16:23
- 10♂︎ Mars16:23 – 17:36
- 11☉︎ Sun17:36 – 18:48
- 12♀︎ Venus18:48 – 20:00
Night
- 1☿︎ Mercury20:00 – 20:48
- 2☽︎ Moon20:48 – 21:36
- 3♄︎ Saturn21:36 – 22:24
- 4♃︎ Jupiter22:24 – 23:11
- 5♂︎ Mars23:11 – 23:59
- 6☉︎ Sun23:59 – 00:47
- 7♀︎ Venus00:47 – 01:35
- 8☿︎ Mercury01:35 – 02:23
- 9☽︎ Moon02:23 – 03:10
- 10♄︎ Saturn03:10 – 03:58
- 11♃︎ Jupiter03:58 – 04:46
- 12♂︎ Mars04:46 – 05:34
Other cities · Argentina
Questions
How are the planetary hours calculated in Buenos Aires?
On Saturday, 12 December 2026, the Sun rises at 05:34 and sets at 20:00: the day lasts 14h 27m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 05:34, lasts 9h 34m: twelve night hours of 48 min.
Which planet rules the first hour that day?
Saturn, from 05:34 to 06:46: 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.