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, 12 June 2026: day of Venus
- Sunrise
- 07:57
- Sunset
- 17:49
- Next sunrise
- 07:57
A day hour lasts 49 min; a night hour, 1h 11m. Local time (America/Argentina/Buenos_Aires).
Day
- 1♀︎ Venus07:57 – 08:46
- 2☿︎ Mercury08:46 – 09:36
- 3☽︎ Moon09:36 – 10:25
- 4♄︎ Saturn10:25 – 11:14
- 5♃︎ Jupiter11:14 – 12:04
- 6♂︎ Mars12:04 – 12:53
- 7☉︎ Sun12:53 – 13:42
- 8♀︎ Venus13:42 – 14:32
- 9☿︎ Mercury14:32 – 15:21
- 10☽︎ Moon15:21 – 16:10
- 11♄︎ Saturn16:10 – 16:59
- 12♃︎ Jupiter16:59 – 17:49
Night
- 1♂︎ Mars17:49 – 19:00
- 2☉︎ Sun19:00 – 20:10
- 3♀︎ Venus20:10 – 21:21
- 4☿︎ Mercury21:21 – 22:32
- 5☽︎ Moon22:32 – 23:42
- 6♄︎ Saturn23:42 – 00:53
- 7♃︎ Jupiter00:53 – 02:04
- 8♂︎ Mars02:04 – 03:15
- 9☉︎ Sun03:15 – 04:25
- 10♀︎ Venus04:25 – 05:36
- 11☿︎ Mercury05:36 – 06:47
- 12☽︎ Moon06:47 – 07:57
Other cities · Argentina
Questions
How are the planetary hours calculated in Buenos Aires?
On Friday, 12 June 2026, the Sun rises at 07:57 and sets at 17:49: the day lasts 9h 52m, that is twelve day hours of 49 min. The night, until the next sunrise at 07:57, lasts 14h 09m: twelve night hours of 1h 11m.
Which planet rules the first hour that day?
Venus, from 07:57 to 08:46: 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.