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 Tuesday, 4 August 2026: day of Mars
- Sunrise
- 07:47
- Sunset
- 18:05
- Next sunrise
- 07:46
A day hour lasts 51 min; a night hour, 1h 08m. Local time (America/Argentina/Buenos_Aires).
Day
- 1♂︎ Mars07:47 – 08:39
- 2☉︎ Sun08:39 – 09:30
- 3♀︎ Venus09:30 – 10:22
- 4☿︎ Mercury10:22 – 11:13
- 5☽︎ Moon11:13 – 12:05
- 6♄︎ Saturn12:05 – 12:56
- 7♃︎ Jupiter12:56 – 13:48
- 8♂︎ Mars13:48 – 14:39
- 9☉︎ Sun14:39 – 15:30
- 10♀︎ Venus15:30 – 16:22
- 11☿︎ Mercury16:22 – 17:13
- 12☽︎ Moon17:13 – 18:05
Night
- 1♄︎ Saturn18:05 – 19:13
- 2♃︎ Jupiter19:13 – 20:22
- 3♂︎ Mars20:22 – 21:30
- 4☉︎ Sun21:30 – 22:39
- 5♀︎ Venus22:39 – 23:47
- 6☿︎ Mercury23:47 – 00:56
- 7☽︎ Moon00:56 – 02:04
- 8♄︎ Saturn02:04 – 03:12
- 9♃︎ Jupiter03:12 – 04:21
- 10♂︎ Mars04:21 – 05:29
- 11☉︎ Sun05:29 – 06:38
- 12♀︎ Venus06:38 – 07:46
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Tuesday, 4 August 2026, the Sun rises at 07:47 and sets at 18:05: the day lasts 10h 18m, that is twelve day hours of 51 min. The night, until the next sunrise at 07:46, lasts 13h 41m: twelve night hours of 1h 08m.
Which planet rules the first hour that day?
Mars, from 07:47 to 08:39: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.