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, 30 October 2026: day of Venus
- Sunrise
- 05:53
- Sunset
- 19:21
- Next sunrise
- 05:52
A day hour lasts 1h 07m; a night hour, 53 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1♀︎ Venus05:53 – 07:01
- 2☿︎ Mercury07:01 – 08:08
- 3☽︎ Moon08:08 – 09:15
- 4♄︎ Saturn09:15 – 10:22
- 5♃︎ Jupiter10:22 – 11:30
- 6♂︎ Mars11:30 – 12:37
- 7☉︎ Sun12:37 – 13:44
- 8♀︎ Venus13:44 – 14:51
- 9☿︎ Mercury14:51 – 15:59
- 10☽︎ Moon15:59 – 17:06
- 11♄︎ Saturn17:06 – 18:13
- 12♃︎ Jupiter18:13 – 19:21
Night
- 1♂︎ Mars19:21 – 20:13
- 2☉︎ Sun20:13 – 21:06
- 3♀︎ Venus21:06 – 21:58
- 4☿︎ Mercury21:58 – 22:51
- 5☽︎ Moon22:51 – 23:44
- 6♄︎ Saturn23:44 – 00:36
- 7♃︎ Jupiter00:36 – 01:29
- 8♂︎ Mars01:29 – 02:22
- 9☉︎ Sun02:22 – 03:14
- 10♀︎ Venus03:14 – 04:07
- 11☿︎ Mercury04:07 – 05:00
- 12☽︎ Moon05:00 – 05:52
Other cities · Argentina
Questions
How are the planetary hours calculated in Buenos Aires?
On Friday, 30 October 2026, the Sun rises at 05:53 and sets at 19:21: the day lasts 13h 27m, that is twelve day hours of 1h 07m. The night, until the next sunrise at 05:52, lasts 10h 32m: twelve night hours of 53 min.
Which planet rules the first hour that day?
Venus, from 05:53 to 07:01: 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.