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 Wednesday, 22 July 2026: day of Mercury
- Sunrise
- 07:58
- Sunset
- 17:54
- Next sunrise
- 07:58
A day hour lasts 50 min; a night hour, 1h 10m. Local time (America/Argentina/Buenos_Aires).
Day
- 1☿︎ Mercury07:58 – 08:48
- 2☽︎ Moon08:48 – 09:38
- 3♄︎ Saturn09:38 – 10:27
- 4♃︎ Jupiter10:27 – 11:17
- 5♂︎ Mars11:17 – 12:07
- 6☉︎ Sun12:07 – 12:56
- 7♀︎ Venus12:56 – 13:46
- 8☿︎ Mercury13:46 – 14:36
- 9☽︎ Moon14:36 – 15:25
- 10♄︎ Saturn15:25 – 16:15
- 11♃︎ Jupiter16:15 – 17:05
- 12♂︎ Mars17:05 – 17:54
Night
- 1☉︎ Sun17:54 – 19:05
- 2♀︎ Venus19:05 – 20:15
- 3☿︎ Mercury20:15 – 21:25
- 4☽︎ Moon21:25 – 22:35
- 5♄︎ Saturn22:35 – 23:46
- 6♃︎ Jupiter23:46 – 00:56
- 7♂︎ Mars00:56 – 02:06
- 8☉︎ Sun02:06 – 03:17
- 9♀︎ Venus03:17 – 04:27
- 10☿︎ Mercury04:27 – 05:37
- 11☽︎ Moon05:37 – 06:47
- 12♄︎ Saturn06:47 – 07:58
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Wednesday, 22 July 2026, the Sun rises at 07:58 and sets at 17:54: the day lasts 9h 56m, that is twelve day hours of 50 min. The night, until the next sunrise at 07:58, lasts 14h 03m: twelve night hours of 1h 10m.
Which planet rules the first hour that day?
Mercury, from 07:58 to 08:48: 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.