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 Wednesday, 23 December 2026: day of Mercury
- Sunrise
- 05:38
- Sunset
- 20:07
- Next sunrise
- 05:38
A day hour lasts 1h 12m; a night hour, 48 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1☿︎ Mercury05:38 – 06:50
- 2☽︎ Moon06:50 – 08:03
- 3♄︎ Saturn08:03 – 09:15
- 4♃︎ Jupiter09:15 – 10:27
- 5♂︎ Mars10:27 – 11:40
- 6☉︎ Sun11:40 – 12:52
- 7♀︎ Venus12:52 – 14:05
- 8☿︎ Mercury14:05 – 15:17
- 9☽︎ Moon15:17 – 16:29
- 10♄︎ Saturn16:29 – 17:42
- 11♃︎ Jupiter17:42 – 18:54
- 12♂︎ Mars18:54 – 20:07
Night
- 1☉︎ Sun20:07 – 20:54
- 2♀︎ Venus20:54 – 21:42
- 3☿︎ Mercury21:42 – 22:29
- 4☽︎ Moon22:29 – 23:17
- 5♄︎ Saturn23:17 – 00:05
- 6♃︎ Jupiter00:05 – 00:52
- 7♂︎ Mars00:52 – 01:40
- 8☉︎ Sun01:40 – 02:28
- 9♀︎ Venus02:28 – 03:15
- 10☿︎ Mercury03:15 – 04:03
- 11☽︎ Moon04:03 – 04:51
- 12♄︎ Saturn04:51 – 05:38
Other cities · Argentina
Questions
How are the planetary hours calculated in Buenos Aires?
On Wednesday, 23 December 2026, the Sun rises at 05:38 and sets at 20:07: the day lasts 14h 29m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 05:38, lasts 9h 32m: twelve night hours of 48 min.
Which planet rules the first hour that day?
Mercury, from 05:38 to 06:50: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.