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 Tuesday, 12 January 2027: day of Mars
- Sunrise
- 05:53
- Sunset
- 20:09
- Next sunrise
- 05:54
A day hour lasts 1h 11m; a night hour, 49 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1♂︎ Mars05:53 – 07:04
- 2☉︎ Sun07:04 – 08:16
- 3♀︎ Venus08:16 – 09:27
- 4☿︎ Mercury09:27 – 10:38
- 5☽︎ Moon10:38 – 11:50
- 6♄︎ Saturn11:50 – 13:01
- 7♃︎ Jupiter13:01 – 14:12
- 8♂︎ Mars14:12 – 15:24
- 9☉︎ Sun15:24 – 16:35
- 10♀︎ Venus16:35 – 17:47
- 11☿︎ Mercury17:47 – 18:58
- 12☽︎ Moon18:58 – 20:09
Night
- 1♄︎ Saturn20:09 – 20:58
- 2♃︎ Jupiter20:58 – 21:47
- 3♂︎ Mars21:47 – 22:35
- 4☉︎ Sun22:35 – 23:24
- 5♀︎ Venus23:24 – 00:13
- 6☿︎ Mercury00:13 – 01:02
- 7☽︎ Moon01:02 – 01:50
- 8♄︎ Saturn01:50 – 02:39
- 9♃︎ Jupiter02:39 – 03:28
- 10♂︎ Mars03:28 – 04:17
- 11☉︎ Sun04:17 – 05:05
- 12♀︎ Venus05:05 – 05:54
Other cities · Argentina
Questions
How are the planetary hours calculated in Buenos Aires?
On Tuesday, 12 January 2027, the Sun rises at 05:53 and sets at 20:09: the day lasts 14h 16m, that is twelve day hours of 1h 11m. The night, until the next sunrise at 05:54, lasts 9h 45m: twelve night hours of 49 min.
Which planet rules the first hour that day?
Mars, from 05:53 to 07:04: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.