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, 18 November 2026: day of Mercury
- Sunrise
- 05:38
- Sunset
- 19:39
- Next sunrise
- 05:37
A day hour lasts 1h 10m; a night hour, 50 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1☿︎ Mercury05:38 – 06:48
- 2☽︎ Moon06:48 – 07:58
- 3♄︎ Saturn07:58 – 09:08
- 4♃︎ Jupiter09:08 – 10:18
- 5♂︎ Mars10:18 – 11:28
- 6☉︎ Sun11:28 – 12:38
- 7♀︎ Venus12:38 – 13:49
- 8☿︎ Mercury13:49 – 14:59
- 9☽︎ Moon14:59 – 16:09
- 10♄︎ Saturn16:09 – 17:19
- 11♃︎ Jupiter17:19 – 18:29
- 12♂︎ Mars18:29 – 19:39
Night
- 1☉︎ Sun19:39 – 20:29
- 2♀︎ Venus20:29 – 21:19
- 3☿︎ Mercury21:19 – 22:09
- 4☽︎ Moon22:09 – 22:58
- 5♄︎ Saturn22:58 – 23:48
- 6♃︎ Jupiter23:48 – 00:38
- 7♂︎ Mars00:38 – 01:28
- 8☉︎ Sun01:28 – 02:18
- 9♀︎ Venus02:18 – 03:08
- 10☿︎ Mercury03:08 – 03:58
- 11☽︎ Moon03:58 – 04:48
- 12♄︎ Saturn04:48 – 05:37
Other cities · Argentina
Questions
How are the planetary hours calculated in Buenos Aires?
On Wednesday, 18 November 2026, the Sun rises at 05:38 and sets at 19:39: the day lasts 14h 01m, that is twelve day hours of 1h 10m. The night, until the next sunrise at 05:37, lasts 9h 58m: twelve night hours of 50 min.
Which planet rules the first hour that day?
Mercury, from 05:38 to 06:48: 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.