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 Sunday, 16 August 2026: day of the Sun
- Sunrise
- 07:33
- Sunset
- 18:15
- Next sunrise
- 07:32
A day hour lasts 53 min; a night hour, 1h 06m. Local time (America/Argentina/Buenos_Aires).
Day
- 1☉︎ Sun07:33 – 08:27
- 2♀︎ Venus08:27 – 09:20
- 3☿︎ Mercury09:20 – 10:14
- 4☽︎ Moon10:14 – 11:07
- 5♄︎ Saturn11:07 – 12:01
- 6♃︎ Jupiter12:01 – 12:54
- 7♂︎ Mars12:54 – 13:48
- 8☉︎ Sun13:48 – 14:41
- 9♀︎ Venus14:41 – 15:35
- 10☿︎ Mercury15:35 – 16:28
- 11☽︎ Moon16:28 – 17:22
- 12♄︎ Saturn17:22 – 18:15
Night
- 1♃︎ Jupiter18:15 – 19:22
- 2♂︎ Mars19:22 – 20:28
- 3☉︎ Sun20:28 – 21:34
- 4♀︎ Venus21:34 – 22:41
- 5☿︎ Mercury22:41 – 23:47
- 6☽︎ Moon23:47 – 00:54
- 7♄︎ Saturn00:54 – 02:00
- 8♃︎ Jupiter02:00 – 03:06
- 9♂︎ Mars03:06 – 04:13
- 10☉︎ Sun04:13 – 05:19
- 11♀︎ Venus05:19 – 06:26
- 12☿︎ Mercury06:26 – 07:32
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Sunday, 16 August 2026, the Sun rises at 07:33 and sets at 18:15: the day lasts 10h 42m, that is twelve day hours of 53 min. The night, until the next sunrise at 07:32, lasts 13h 17m: twelve night hours of 1h 06m.
Which planet rules the first hour that day?
The Sun, from 07:33 to 08:27: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.