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, 23 July 2026: day of Jupiter
- Sunrise
- 07:58
- Sunset
- 17:55
- Next sunrise
- 07:57
A day hour lasts 50 min; a night hour, 1h 10m. Local time (America/Argentina/Buenos_Aires).
Day
- 1♃︎ Jupiter07:58 – 08:48
- 2♂︎ Mars08:48 – 09:37
- 3☉︎ Sun09:37 – 10:27
- 4♀︎ Venus10:27 – 11:17
- 5☿︎ Mercury11:17 – 12:07
- 6☽︎ Moon12:07 – 12:56
- 7♄︎ Saturn12:56 – 13:46
- 8♃︎ Jupiter13:46 – 14:36
- 9♂︎ Mars14:36 – 15:26
- 10☉︎ Sun15:26 – 16:16
- 11♀︎ Venus16:16 – 17:05
- 12☿︎ Mercury17:05 – 17:55
Night
- 1☽︎ Moon17:55 – 19:05
- 2♄︎ Saturn19:05 – 20:15
- 3♃︎ Jupiter20:15 – 21:26
- 4♂︎ Mars21:26 – 22:36
- 5☉︎ Sun22:36 – 23:46
- 6♀︎ Venus23:46 – 00:56
- 7☿︎ Mercury00:56 – 02:06
- 8☽︎ Moon02:06 – 03:16
- 9♄︎ Saturn03:16 – 04:27
- 10♃︎ Jupiter04:27 – 05:37
- 11♂︎ Mars05:37 – 06:47
- 12☉︎ Sun06:47 – 07:57
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Thursday, 23 July 2026, the Sun rises at 07:58 and sets at 17:55: the day lasts 9h 57m, that is twelve day hours of 50 min. The night, until the next sunrise at 07:57, lasts 14h 02m: twelve night hours of 1h 10m.
Which planet rules the first hour that day?
Jupiter, from 07:58 to 08:48: 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.