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, 31 December 2026: day of Jupiter
- Sunrise
- 05:30
- Sunset
- 20:15
- Next sunrise
- 05:31
A day hour lasts 1h 14m; a night hour, 46 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1♃︎ Jupiter05:30 – 06:44
- 2♂︎ Mars06:44 – 07:58
- 3☉︎ Sun07:58 – 09:11
- 4♀︎ Venus09:11 – 10:25
- 5☿︎ Mercury10:25 – 11:39
- 6☽︎ Moon11:39 – 12:53
- 7♄︎ Saturn12:53 – 14:06
- 8♃︎ Jupiter14:06 – 15:20
- 9♂︎ Mars15:20 – 16:34
- 10☉︎ Sun16:34 – 17:48
- 11♀︎ Venus17:48 – 19:02
- 12☿︎ Mercury19:02 – 20:15
Night
- 1☽︎ Moon20:15 – 21:02
- 2♄︎ Saturn21:02 – 21:48
- 3♃︎ Jupiter21:48 – 22:34
- 4♂︎ Mars22:34 – 23:21
- 5☉︎ Sun23:21 – 00:07
- 6♀︎ Venus00:07 – 00:53
- 7☿︎ Mercury00:53 – 01:39
- 8☽︎ Moon01:39 – 02:26
- 9♄︎ Saturn02:26 – 03:12
- 10♃︎ Jupiter03:12 – 03:58
- 11♂︎ Mars03:58 – 04:44
- 12☉︎ Sun04:44 – 05:31
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Thursday, 31 December 2026, the Sun rises at 05:30 and sets at 20:15: the day lasts 14h 45m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 05:31, lasts 9h 15m: twelve night hours of 46 min.
Which planet rules the first hour that day?
Jupiter, from 05:30 to 06:44: 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.