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, 22 August 2026: day of Saturn
- Sunrise
- 07:25
- Sunset
- 18:28
- Next sunrise
- 07:23
A day hour lasts 55 min; a night hour, 1h 05m. Local time (America/Argentina/Buenos_Aires).
Day
- 1♄︎ Saturn07:25 – 08:20
- 2♃︎ Jupiter08:20 – 09:15
- 3♂︎ Mars09:15 – 10:10
- 4☉︎ Sun10:10 – 11:06
- 5♀︎ Venus11:06 – 12:01
- 6☿︎ Mercury12:01 – 12:56
- 7☽︎ Moon12:56 – 13:51
- 8♄︎ Saturn13:51 – 14:47
- 9♃︎ Jupiter14:47 – 15:42
- 10♂︎ Mars15:42 – 16:37
- 11☉︎ Sun16:37 – 17:32
- 12♀︎ Venus17:32 – 18:28
Night
- 1☿︎ Mercury18:28 – 19:32
- 2☽︎ Moon19:32 – 20:37
- 3♄︎ Saturn20:37 – 21:42
- 4♃︎ Jupiter21:42 – 22:46
- 5♂︎ Mars22:46 – 23:51
- 6☉︎ Sun23:51 – 00:55
- 7♀︎ Venus00:55 – 02:00
- 8☿︎ Mercury02:00 – 03:05
- 9☽︎ Moon03:05 – 04:09
- 10♄︎ Saturn04:09 – 05:14
- 11♃︎ Jupiter05:14 – 06:19
- 12♂︎ Mars06:19 – 07:23
Other cities · Argentina
Questions
How are the planetary hours calculated in Buenos Aires?
On Saturday, 22 August 2026, the Sun rises at 07:25 and sets at 18:28: the day lasts 11h 03m, that is twelve day hours of 55 min. The night, until the next sunrise at 07:23, lasts 12h 56m: twelve night hours of 1h 05m.
Which planet rules the first hour that day?
Saturn, from 07:25 to 08:20: 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.