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 Friday, 23 October 2026: day of Venus
- Sunrise
- 06:01
- Sunset
- 19:14
- Next sunrise
- 06:00
A day hour lasts 1h 06m; a night hour, 54 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1♀︎ Venus06:01 – 07:07
- 2☿︎ Mercury07:07 – 08:13
- 3☽︎ Moon08:13 – 09:19
- 4♄︎ Saturn09:19 – 10:25
- 5♃︎ Jupiter10:25 – 11:31
- 6♂︎ Mars11:31 – 12:38
- 7☉︎ Sun12:38 – 13:44
- 8♀︎ Venus13:44 – 14:50
- 9☿︎ Mercury14:50 – 15:56
- 10☽︎ Moon15:56 – 17:02
- 11♄︎ Saturn17:02 – 18:08
- 12♃︎ Jupiter18:08 – 19:14
Night
- 1♂︎ Mars19:14 – 20:08
- 2☉︎ Sun20:08 – 21:02
- 3♀︎ Venus21:02 – 21:56
- 4☿︎ Mercury21:56 – 22:49
- 5☽︎ Moon22:49 – 23:43
- 6♄︎ Saturn23:43 – 00:37
- 7♃︎ Jupiter00:37 – 01:31
- 8♂︎ Mars01:31 – 02:25
- 9☉︎ Sun02:25 – 03:18
- 10♀︎ Venus03:18 – 04:12
- 11☿︎ Mercury04:12 – 05:06
- 12☽︎ Moon05:06 – 06:00
Other cities · Argentina
Questions
How are the planetary hours calculated in Buenos Aires?
On Friday, 23 October 2026, the Sun rises at 06:01 and sets at 19:14: the day lasts 13h 13m, that is twelve day hours of 1h 06m. The night, until the next sunrise at 06:00, lasts 10h 46m: twelve night hours of 54 min.
Which planet rules the first hour that day?
Venus, from 06:01 to 07:07: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.