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 Wednesday, 26 August 2026: day of Mercury
- Sunrise
- 07:20
- Sunset
- 18:30
- Next sunrise
- 07:18
A day hour lasts 56 min; a night hour, 1h 04m. Local time (America/Argentina/Buenos_Aires).
Day
- 1☿︎ Mercury07:20 – 08:16
- 2☽︎ Moon08:16 – 09:11
- 3♄︎ Saturn09:11 – 10:07
- 4♃︎ Jupiter10:07 – 11:03
- 5♂︎ Mars11:03 – 11:59
- 6☉︎ Sun11:59 – 12:55
- 7♀︎ Venus12:55 – 13:51
- 8☿︎ Mercury13:51 – 14:47
- 9☽︎ Moon14:47 – 15:43
- 10♄︎ Saturn15:43 – 16:39
- 11♃︎ Jupiter16:39 – 17:35
- 12♂︎ Mars17:35 – 18:30
Night
- 1☉︎ Sun18:30 – 19:34
- 2♀︎ Venus19:34 – 20:38
- 3☿︎ Mercury20:38 – 21:42
- 4☽︎ Moon21:42 – 22:46
- 5♄︎ Saturn22:46 – 23:50
- 6♃︎ Jupiter23:50 – 00:54
- 7♂︎ Mars00:54 – 01:58
- 8☉︎ Sun01:58 – 03:02
- 9♀︎ Venus03:02 – 04:06
- 10☿︎ Mercury04:06 – 05:10
- 11☽︎ Moon05:10 – 06:14
- 12♄︎ Saturn06:14 – 07:18
Other cities · Argentina
Questions
How are the planetary hours calculated in Buenos Aires?
On Wednesday, 26 August 2026, the Sun rises at 07:20 and sets at 18:30: the day lasts 11h 11m, that is twelve day hours of 56 min. The night, until the next sunrise at 07:18, lasts 12h 48m: twelve night hours of 1h 04m.
Which planet rules the first hour that day?
Mercury, from 07:20 to 08:16: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.