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, 16 October 2026: day of Venus
- Sunrise
- 06:10
- Sunset
- 19:08
- Next sunrise
- 06:08
A day hour lasts 1h 05m; a night hour, 55 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1♀︎ Venus06:10 – 07:14
- 2☿︎ Mercury07:14 – 08:19
- 3☽︎ Moon08:19 – 09:24
- 4♄︎ Saturn09:24 – 10:29
- 5♃︎ Jupiter10:29 – 11:34
- 6♂︎ Mars11:34 – 12:39
- 7☉︎ Sun12:39 – 13:44
- 8♀︎ Venus13:44 – 14:49
- 9☿︎ Mercury14:49 – 15:53
- 10☽︎ Moon15:53 – 16:58
- 11♄︎ Saturn16:58 – 18:03
- 12♃︎ Jupiter18:03 – 19:08
Night
- 1♂︎ Mars19:08 – 20:03
- 2☉︎ Sun20:03 – 20:58
- 3♀︎ Venus20:58 – 21:53
- 4☿︎ Mercury21:53 – 22:48
- 5☽︎ Moon22:48 – 23:43
- 6♄︎ Saturn23:43 – 00:38
- 7♃︎ Jupiter00:38 – 01:33
- 8♂︎ Mars01:33 – 02:28
- 9☉︎ Sun02:28 – 03:23
- 10♀︎ Venus03:23 – 04:18
- 11☿︎ Mercury04:18 – 05:13
- 12☽︎ Moon05:13 – 06:08
Other cities · Argentina
Questions
How are the planetary hours calculated in Buenos Aires?
On Friday, 16 October 2026, the Sun rises at 06:10 and sets at 19:08: the day lasts 12h 59m, that is twelve day hours of 1h 05m. The night, until the next sunrise at 06:08, lasts 11h 00m: twelve night hours of 55 min.
Which planet rules the first hour that day?
Venus, from 06:10 to 07:14: 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.