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, 29 December 2026: day of Mars
- Sunrise
- 05:41
- Sunset
- 20:09
- Next sunrise
- 05:42
A day hour lasts 1h 12m; a night hour, 48 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1♂︎ Mars05:41 – 06:54
- 2☉︎ Sun06:54 – 08:06
- 3♀︎ Venus08:06 – 09:18
- 4☿︎ Mercury09:18 – 10:31
- 5☽︎ Moon10:31 – 11:43
- 6♄︎ Saturn11:43 – 12:55
- 7♃︎ Jupiter12:55 – 14:07
- 8♂︎ Mars14:07 – 15:20
- 9☉︎ Sun15:20 – 16:32
- 10♀︎ Venus16:32 – 17:44
- 11☿︎ Mercury17:44 – 18:56
- 12☽︎ Moon18:56 – 20:09
Night
- 1♄︎ Saturn20:09 – 20:56
- 2♃︎ Jupiter20:56 – 21:44
- 3♂︎ Mars21:44 – 22:32
- 4☉︎ Sun22:32 – 23:20
- 5♀︎ Venus23:20 – 00:08
- 6☿︎ Mercury00:08 – 00:55
- 7☽︎ Moon00:55 – 01:43
- 8♄︎ Saturn01:43 – 02:31
- 9♃︎ Jupiter02:31 – 03:19
- 10♂︎ Mars03:19 – 04:07
- 11☉︎ Sun04:07 – 04:54
- 12♀︎ Venus04:54 – 05:42
Other cities · Argentina
Questions
How are the planetary hours calculated in Buenos Aires?
On Tuesday, 29 December 2026, the Sun rises at 05:41 and sets at 20:09: the day lasts 14h 27m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 05:42, lasts 9h 34m: twelve night hours of 48 min.
Which planet rules the first hour that day?
Mars, from 05:41 to 06:54: 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.