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 Thursday, 20 August 2026: day of Jupiter
- Sunrise
- 07:28
- Sunset
- 18:18
- Next sunrise
- 07:27
A day hour lasts 54 min; a night hour, 1h 06m. Local time (America/Argentina/Buenos_Aires).
Day
- 1♃︎ Jupiter07:28 – 08:22
- 2♂︎ Mars08:22 – 09:17
- 3☉︎ Sun09:17 – 10:11
- 4♀︎ Venus10:11 – 11:05
- 5☿︎ Mercury11:05 – 11:59
- 6☽︎ Moon11:59 – 12:53
- 7♄︎ Saturn12:53 – 13:48
- 8♃︎ Jupiter13:48 – 14:42
- 9♂︎ Mars14:42 – 15:36
- 10☉︎ Sun15:36 – 16:30
- 11♀︎ Venus16:30 – 17:24
- 12☿︎ Mercury17:24 – 18:18
Night
- 1☽︎ Moon18:18 – 19:24
- 2♄︎ Saturn19:24 – 20:30
- 3♃︎ Jupiter20:30 – 21:36
- 4♂︎ Mars21:36 – 22:41
- 5☉︎ Sun22:41 – 23:47
- 6♀︎ Venus23:47 – 00:53
- 7☿︎ Mercury00:53 – 01:58
- 8☽︎ Moon01:58 – 03:04
- 9♄︎ Saturn03:04 – 04:10
- 10♃︎ Jupiter04:10 – 05:15
- 11♂︎ Mars05:15 – 06:21
- 12☉︎ Sun06:21 – 07:27
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Thursday, 20 August 2026, the Sun rises at 07:28 and sets at 18:18: the day lasts 10h 50m, that is twelve day hours of 54 min. The night, until the next sunrise at 07:27, lasts 13h 08m: twelve night hours of 1h 06m.
Which planet rules the first hour that day?
Jupiter, from 07:28 to 08:22: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.