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, 29 January 2027: day of Venus
- Sunrise
- 06:10
- Sunset
- 20:02
- Next sunrise
- 06:11
A day hour lasts 1h 09m; a night hour, 51 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1♀︎ Venus06:10 – 07:19
- 2☿︎ Mercury07:19 – 08:29
- 3☽︎ Moon08:29 – 09:38
- 4♄︎ Saturn09:38 – 10:47
- 5♃︎ Jupiter10:47 – 11:57
- 6♂︎ Mars11:57 – 13:06
- 7☉︎ Sun13:06 – 14:15
- 8♀︎ Venus14:15 – 15:24
- 9☿︎ Mercury15:24 – 16:34
- 10☽︎ Moon16:34 – 17:43
- 11♄︎ Saturn17:43 – 18:52
- 12♃︎ Jupiter18:52 – 20:02
Night
- 1♂︎ Mars20:02 – 20:52
- 2☉︎ Sun20:52 – 21:43
- 3♀︎ Venus21:43 – 22:34
- 4☿︎ Mercury22:34 – 23:25
- 5☽︎ Moon23:25 – 00:16
- 6♄︎ Saturn00:16 – 01:06
- 7♃︎ Jupiter01:06 – 01:57
- 8♂︎ Mars01:57 – 02:48
- 9☉︎ Sun02:48 – 03:39
- 10♀︎ Venus03:39 – 04:29
- 11☿︎ Mercury04:29 – 05:20
- 12☽︎ Moon05:20 – 06:11
Other cities · Argentina
Questions
How are the planetary hours calculated in Buenos Aires?
On Friday, 29 January 2027, the Sun rises at 06:10 and sets at 20:02: the day lasts 13h 52m, that is twelve day hours of 1h 09m. The night, until the next sunrise at 06:11, lasts 10h 09m: twelve night hours of 51 min.
Which planet rules the first hour that day?
Venus, from 06:10 to 07:19: 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.