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 Wednesday, 30 December 2026: day of Mercury
- Sunrise
- 05:29
- Sunset
- 20:15
- Next sunrise
- 05:30
A day hour lasts 1h 14m; a night hour, 46 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1☿︎ Mercury05:29 – 06:43
- 2☽︎ Moon06:43 – 07:57
- 3♄︎ Saturn07:57 – 09:11
- 4♃︎ Jupiter09:11 – 10:25
- 5♂︎ Mars10:25 – 11:38
- 6☉︎ Sun11:38 – 12:52
- 7♀︎ Venus12:52 – 14:06
- 8☿︎ Mercury14:06 – 15:20
- 9☽︎ Moon15:20 – 16:34
- 10♄︎ Saturn16:34 – 17:48
- 11♃︎ Jupiter17:48 – 19:01
- 12♂︎ Mars19:01 – 20:15
Night
- 1☉︎ Sun20:15 – 21:01
- 2♀︎ Venus21:01 – 21:48
- 3☿︎ Mercury21:48 – 22:34
- 4☽︎ Moon22:34 – 23:20
- 5♄︎ Saturn23:20 – 00:06
- 6♃︎ Jupiter00:06 – 00:53
- 7♂︎ Mars00:53 – 01:39
- 8☉︎ Sun01:39 – 02:25
- 9♀︎ Venus02:25 – 03:11
- 10☿︎ Mercury03:11 – 03:58
- 11☽︎ Moon03:58 – 04:44
- 12♄︎ Saturn04:44 – 05:30
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Wednesday, 30 December 2026, the Sun rises at 05:29 and sets at 20:15: the day lasts 14h 46m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 05:30, lasts 9h 15m: twelve night hours of 46 min.
Which planet rules the first hour that day?
Mercury, from 05:29 to 06:43: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.