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 Tuesday, 22 December 2026: day of Mars
- Sunrise
- 05:24
- Sunset
- 20:13
- Next sunrise
- 05:25
A day hour lasts 1h 14m; a night hour, 46 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1♂︎ Mars05:24 – 06:38
- 2☉︎ Sun06:38 – 07:52
- 3♀︎ Venus07:52 – 09:06
- 4☿︎ Mercury09:06 – 10:20
- 5☽︎ Moon10:20 – 11:34
- 6♄︎ Saturn11:34 – 12:48
- 7♃︎ Jupiter12:48 – 14:02
- 8♂︎ Mars14:02 – 15:16
- 9☉︎ Sun15:16 – 16:30
- 10♀︎ Venus16:30 – 17:45
- 11☿︎ Mercury17:45 – 18:59
- 12☽︎ Moon18:59 – 20:13
Night
- 1♄︎ Saturn20:13 – 20:59
- 2♃︎ Jupiter20:59 – 21:45
- 3♂︎ Mars21:45 – 22:31
- 4☉︎ Sun22:31 – 23:17
- 5♀︎ Venus23:17 – 00:03
- 6☿︎ Mercury00:03 – 00:49
- 7☽︎ Moon00:49 – 01:35
- 8♄︎ Saturn01:35 – 02:21
- 9♃︎ Jupiter02:21 – 03:07
- 10♂︎ Mars03:07 – 03:53
- 11☉︎ Sun03:53 – 04:39
- 12♀︎ Venus04:39 – 05:25
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Tuesday, 22 December 2026, the Sun rises at 05:24 and sets at 20:13: the day lasts 14h 48m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 05:25, lasts 9h 12m: twelve night hours of 46 min.
Which planet rules the first hour that day?
Mars, from 05:24 to 06:38: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.