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 Monday, 28 December 2026: day of the Moon
- Sunrise
- 05:41
- Sunset
- 20:08
- Next sunrise
- 05:41
A day hour lasts 1h 12m; a night hour, 48 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1☽︎ Moon05:41 – 06:53
- 2♄︎ Saturn06:53 – 08:05
- 3♃︎ Jupiter08:05 – 09:18
- 4♂︎ Mars09:18 – 10:30
- 5☉︎ Sun10:30 – 11:42
- 6♀︎ Venus11:42 – 12:55
- 7☿︎ Mercury12:55 – 14:07
- 8☽︎ Moon14:07 – 15:19
- 9♄︎ Saturn15:19 – 16:31
- 10♃︎ Jupiter16:31 – 17:44
- 11♂︎ Mars17:44 – 18:56
- 12☉︎ Sun18:56 – 20:08
Night
- 1♀︎ Venus20:08 – 20:56
- 2☿︎ Mercury20:56 – 21:44
- 3☽︎ Moon21:44 – 22:32
- 4♄︎ Saturn22:32 – 23:19
- 5♃︎ Jupiter23:19 – 00:07
- 6♂︎ Mars00:07 – 00:55
- 7☉︎ Sun00:55 – 01:43
- 8♀︎ Venus01:43 – 02:30
- 9☿︎ Mercury02:30 – 03:18
- 10☽︎ Moon03:18 – 04:06
- 11♄︎ Saturn04:06 – 04:54
- 12♃︎ Jupiter04:54 – 05:41
Other cities · Argentina
Questions
How are the planetary hours calculated in Buenos Aires?
On Monday, 28 December 2026, the Sun rises at 05:41 and sets at 20:08: the day lasts 14h 28m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 05:41, lasts 9h 33m: twelve night hours of 48 min.
Which planet rules the first hour that day?
The Moon, from 05:41 to 06:53: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.