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, 16 October 2026: day of Venus
- Sunrise
- 06:03
- Sunset
- 19:08
- Next sunrise
- 06:01
A day hour lasts 1h 05m; a night hour, 54 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1♀︎ Venus06:03 – 07:08
- 2☿︎ Mercury07:08 – 08:14
- 3☽︎ Moon08:14 – 09:19
- 4♄︎ Saturn09:19 – 10:25
- 5♃︎ Jupiter10:25 – 11:30
- 6♂︎ Mars11:30 – 12:36
- 7☉︎ Sun12:36 – 13:41
- 8♀︎ Venus13:41 – 14:47
- 9☿︎ Mercury14:47 – 15:52
- 10☽︎ Moon15:52 – 16:57
- 11♄︎ Saturn16:57 – 18:03
- 12♃︎ Jupiter18:03 – 19:08
Night
- 1♂︎ Mars19:08 – 20:03
- 2☉︎ Sun20:03 – 20:57
- 3♀︎ Venus20:57 – 21:52
- 4☿︎ Mercury21:52 – 22:46
- 5☽︎ Moon22:46 – 23:40
- 6♄︎ Saturn23:40 – 00:35
- 7♃︎ Jupiter00:35 – 01:29
- 8♂︎ Mars01:29 – 02:24
- 9☉︎ Sun02:24 – 03:18
- 10♀︎ Venus03:18 – 04:13
- 11☿︎ Mercury04:13 – 05:07
- 12☽︎ Moon05:07 – 06:01
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Friday, 16 October 2026, the Sun rises at 06:03 and sets at 19:08: the day lasts 13h 06m, that is twelve day hours of 1h 05m. The night, until the next sunrise at 06:01, lasts 10h 53m: twelve night hours of 54 min.
Which planet rules the first hour that day?
Venus, from 06:03 to 07:08: 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.