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, 9 May 2026: day of Saturn
- Sunrise
- 07:35
- Sunset
- 18:03
- Next sunrise
- 07:36
A day hour lasts 52 min; a night hour, 1h 08m. Local time (America/Argentina/Buenos_Aires).
Day
- 1♄︎ Saturn07:35 – 08:28
- 2♃︎ Jupiter08:28 – 09:20
- 3♂︎ Mars09:20 – 10:12
- 4☉︎ Sun10:12 – 11:05
- 5♀︎ Venus11:05 – 11:57
- 6☿︎ Mercury11:57 – 12:49
- 7☽︎ Moon12:49 – 13:42
- 8♄︎ Saturn13:42 – 14:34
- 9♃︎ Jupiter14:34 – 15:26
- 10♂︎ Mars15:26 – 16:19
- 11☉︎ Sun16:19 – 17:11
- 12♀︎ Venus17:11 – 18:03
Night
- 1☿︎ Mercury18:03 – 19:11
- 2☽︎ Moon19:11 – 20:19
- 3♄︎ Saturn20:19 – 21:27
- 4♃︎ Jupiter21:27 – 22:34
- 5♂︎ Mars22:34 – 23:42
- 6☉︎ Sun23:42 – 00:50
- 7♀︎ Venus00:50 – 01:57
- 8☿︎ Mercury01:57 – 03:05
- 9☽︎ Moon03:05 – 04:13
- 10♄︎ Saturn04:13 – 05:21
- 11♃︎ Jupiter05:21 – 06:28
- 12♂︎ Mars06:28 – 07:36
Other cities · Argentina
Questions
How are the planetary hours calculated in Buenos Aires?
On Saturday, 9 May 2026, the Sun rises at 07:35 and sets at 18:03: the day lasts 10h 28m, that is twelve day hours of 52 min. The night, until the next sunrise at 07:36, lasts 13h 33m: twelve night hours of 1h 08m.
Which planet rules the first hour that day?
Saturn, from 07:35 to 08:28: 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.