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, 19 August 2025: day of Mars
- Sunrise
- 07:29
- Sunset
- 18:18
- Next sunrise
- 07:28
A day hour lasts 54 min; a night hour, 1h 06m. Local time (America/Argentina/Buenos_Aires).
Day
- 1♂︎ Mars07:29 – 08:23
- 2☉︎ Sun08:23 – 09:17
- 3♀︎ Venus09:17 – 10:11
- 4☿︎ Mercury10:11 – 11:05
- 5☽︎ Moon11:05 – 11:59
- 6♄︎ Saturn11:59 – 12:54
- 7♃︎ Jupiter12:54 – 13:48
- 8♂︎ Mars13:48 – 14:42
- 9☉︎ Sun14:42 – 15:36
- 10♀︎ Venus15:36 – 16:30
- 11☿︎ Mercury16:30 – 17:24
- 12☽︎ Moon17:24 – 18:18
Night
- 1♄︎ Saturn18:18 – 19:24
- 2♃︎ Jupiter19:24 – 20:30
- 3♂︎ Mars20:30 – 21:35
- 4☉︎ Sun21:35 – 22:41
- 5♀︎ Venus22:41 – 23:47
- 6☿︎ Mercury23:47 – 00:53
- 7☽︎ Moon00:53 – 01:59
- 8♄︎ Saturn01:59 – 03:05
- 9♃︎ Jupiter03:05 – 04:10
- 10♂︎ Mars04:10 – 05:16
- 11☉︎ Sun05:16 – 06:22
- 12♀︎ Venus06:22 – 07:28
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Tuesday, 19 August 2025, the Sun rises at 07:29 and sets at 18:18: the day lasts 10h 49m, that is twelve day hours of 54 min. The night, until the next sunrise at 07:28, lasts 13h 10m: twelve night hours of 1h 06m.
Which planet rules the first hour that day?
Mars, from 07:29 to 08:23: 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.