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, 9 October 2026: day of Venus
- Sunrise
- 06:13
- Sunset
- 19:02
- Next sunrise
- 06:11
A day hour lasts 1h 04m; a night hour, 56 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1♀︎ Venus06:13 – 07:17
- 2☿︎ Mercury07:17 – 08:21
- 3☽︎ Moon08:21 – 09:25
- 4♄︎ Saturn09:25 – 10:29
- 5♃︎ Jupiter10:29 – 11:33
- 6♂︎ Mars11:33 – 12:37
- 7☉︎ Sun12:37 – 13:41
- 8♀︎ Venus13:41 – 14:45
- 9☿︎ Mercury14:45 – 15:49
- 10☽︎ Moon15:49 – 16:54
- 11♄︎ Saturn16:54 – 17:58
- 12♃︎ Jupiter17:58 – 19:02
Night
- 1♂︎ Mars19:02 – 19:57
- 2☉︎ Sun19:57 – 20:53
- 3♀︎ Venus20:53 – 21:49
- 4☿︎ Mercury21:49 – 22:45
- 5☽︎ Moon22:45 – 23:41
- 6♄︎ Saturn23:41 – 00:37
- 7♃︎ Jupiter00:37 – 01:32
- 8♂︎ Mars01:32 – 02:28
- 9☉︎ Sun02:28 – 03:24
- 10♀︎ Venus03:24 – 04:20
- 11☿︎ Mercury04:20 – 05:16
- 12☽︎ Moon05:16 – 06:11
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Friday, 9 October 2026, the Sun rises at 06:13 and sets at 19:02: the day lasts 12h 49m, that is twelve day hours of 1h 04m. The night, until the next sunrise at 06:11, lasts 11h 10m: twelve night hours of 56 min.
Which planet rules the first hour that day?
Venus, from 06:13 to 07:17: 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.