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, 15 January 2027: day of Venus
- Sunrise
- 05:56
- Sunset
- 20:09
- Next sunrise
- 05:57
A day hour lasts 1h 11m; a night hour, 49 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1♀︎ Venus05:56 – 07:07
- 2☿︎ Mercury07:07 – 08:18
- 3☽︎ Moon08:18 – 09:29
- 4♄︎ Saturn09:29 – 10:40
- 5♃︎ Jupiter10:40 – 11:51
- 6♂︎ Mars11:51 – 13:02
- 7☉︎ Sun13:02 – 14:13
- 8♀︎ Venus14:13 – 15:24
- 9☿︎ Mercury15:24 – 16:35
- 10☽︎ Moon16:35 – 17:46
- 11♄︎ Saturn17:46 – 18:57
- 12♃︎ Jupiter18:57 – 20:09
Night
- 1♂︎ Mars20:09 – 20:58
- 2☉︎ Sun20:58 – 21:47
- 3♀︎ Venus21:47 – 22:36
- 4☿︎ Mercury22:36 – 23:25
- 5☽︎ Moon23:25 – 00:14
- 6♄︎ Saturn00:14 – 01:03
- 7♃︎ Jupiter01:03 – 01:52
- 8♂︎ Mars01:52 – 02:41
- 9☉︎ Sun02:41 – 03:30
- 10♀︎ Venus03:30 – 04:19
- 11☿︎ Mercury04:19 – 05:08
- 12☽︎ Moon05:08 – 05:57
Other cities · Argentina
Questions
How are the planetary hours calculated in Buenos Aires?
On Friday, 15 January 2027, the Sun rises at 05:56 and sets at 20:09: the day lasts 14h 13m, that is twelve day hours of 1h 11m. The night, until the next sunrise at 05:57, lasts 9h 48m: twelve night hours of 49 min.
Which planet rules the first hour that day?
Venus, from 05:56 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.