Planetary hours
in Avellaneda.
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, 18 December 2026: day of Venus
- Sunrise
- 05:35
- Sunset
- 20:04
- Next sunrise
- 05:36
A day hour lasts 1h 12m; a night hour, 48 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1♀︎ Venus05:35 – 06:48
- 2☿︎ Mercury06:48 – 08:00
- 3☽︎ Moon08:00 – 09:12
- 4♄︎ Saturn09:12 – 10:25
- 5♃︎ Jupiter10:25 – 11:37
- 6♂︎ Mars11:37 – 12:50
- 7☉︎ Sun12:50 – 14:02
- 8♀︎ Venus14:02 – 15:14
- 9☿︎ Mercury15:14 – 16:27
- 10☽︎ Moon16:27 – 17:39
- 11♄︎ Saturn17:39 – 18:52
- 12♃︎ Jupiter18:52 – 20:04
Night
- 1♂︎ Mars20:04 – 20:52
- 2☉︎ Sun20:52 – 21:39
- 3♀︎ Venus21:39 – 22:27
- 4☿︎ Mercury22:27 – 23:15
- 5☽︎ Moon23:15 – 00:02
- 6♄︎ Saturn00:02 – 00:50
- 7♃︎ Jupiter00:50 – 01:38
- 8♂︎ Mars01:38 – 02:25
- 9☉︎ Sun02:25 – 03:13
- 10♀︎ Venus03:13 – 04:00
- 11☿︎ Mercury04:00 – 04:48
- 12☽︎ Moon04:48 – 05:36
Other cities · Argentina
Questions
How are the planetary hours calculated in Avellaneda?
On Friday, 18 December 2026, the Sun rises at 05:35 and sets at 20:04: the day lasts 14h 29m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 05:36, lasts 9h 32m: twelve night hours of 48 min.
Which planet rules the first hour that day?
Venus, from 05:35 to 06:48: 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.