Planetary hours
in Mar del Plata.
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, 20 November 2026: day of Venus
- Sunrise
- 05:26
- Sunset
- 19:46
- Next sunrise
- 05:25
A day hour lasts 1h 12m; a night hour, 48 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1♀︎ Venus05:26 – 06:37
- 2☿︎ Mercury06:37 – 07:49
- 3☽︎ Moon07:49 – 09:01
- 4♄︎ Saturn09:01 – 10:12
- 5♃︎ Jupiter10:12 – 11:24
- 6♂︎ Mars11:24 – 12:36
- 7☉︎ Sun12:36 – 13:47
- 8♀︎ Venus13:47 – 14:59
- 9☿︎ Mercury14:59 – 16:11
- 10☽︎ Moon16:11 – 17:22
- 11♄︎ Saturn17:22 – 18:34
- 12♃︎ Jupiter18:34 – 19:46
Night
- 1♂︎ Mars19:46 – 20:34
- 2☉︎ Sun20:34 – 21:22
- 3♀︎ Venus21:22 – 22:11
- 4☿︎ Mercury22:11 – 22:59
- 5☽︎ Moon22:59 – 23:47
- 6♄︎ Saturn23:47 – 00:35
- 7♃︎ Jupiter00:35 – 01:24
- 8♂︎ Mars01:24 – 02:12
- 9☉︎ Sun02:12 – 03:00
- 10♀︎ Venus03:00 – 03:48
- 11☿︎ Mercury03:48 – 04:37
- 12☽︎ Moon04:37 – 05:25
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Friday, 20 November 2026, the Sun rises at 05:26 and sets at 19:46: the day lasts 14h 20m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 05:25, lasts 9h 39m: twelve night hours of 48 min.
Which planet rules the first hour that day?
Venus, from 05:26 to 06:37: 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.