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, 30 July 2026: day of Jupiter
- Sunrise
- 07:52
- Sunset
- 18:01
- Next sunrise
- 07:51
A day hour lasts 51 min; a night hour, 1h 09m. Local time (America/Argentina/Buenos_Aires).
Day
- 1♃︎ Jupiter07:52 – 08:43
- 2♂︎ Mars08:43 – 09:33
- 3☉︎ Sun09:33 – 10:24
- 4♀︎ Venus10:24 – 11:15
- 5☿︎ Mercury11:15 – 12:06
- 6☽︎ Moon12:06 – 12:56
- 7♄︎ Saturn12:56 – 13:47
- 8♃︎ Jupiter13:47 – 14:38
- 9♂︎ Mars14:38 – 15:29
- 10☉︎ Sun15:29 – 16:19
- 11♀︎ Venus16:19 – 17:10
- 12☿︎ Mercury17:10 – 18:01
Night
- 1☽︎ Moon18:01 – 19:10
- 2♄︎ Saturn19:10 – 20:19
- 3♃︎ Jupiter20:19 – 21:28
- 4♂︎ Mars21:28 – 22:38
- 5☉︎ Sun22:38 – 23:47
- 6♀︎ Venus23:47 – 00:56
- 7☿︎ Mercury00:56 – 02:05
- 8☽︎ Moon02:05 – 03:14
- 9♄︎ Saturn03:14 – 04:24
- 10♃︎ Jupiter04:24 – 05:33
- 11♂︎ Mars05:33 – 06:42
- 12☉︎ Sun06:42 – 07:51
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Thursday, 30 July 2026, the Sun rises at 07:52 and sets at 18:01: the day lasts 10h 09m, that is twelve day hours of 51 min. The night, until the next sunrise at 07:51, lasts 13h 50m: twelve night hours of 1h 09m.
Which planet rules the first hour that day?
Jupiter, from 07:52 to 08:43: 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.