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, 29 April 2026: day of Mercury
- Sunrise
- 07:29
- Sunset
- 18:04
- Next sunrise
- 07:30
A day hour lasts 53 min; a night hour, 1h 07m. Local time (America/Argentina/Buenos_Aires).
Day
- 1☿︎ Mercury07:29 – 08:22
- 2☽︎ Moon08:22 – 09:15
- 3♄︎ Saturn09:15 – 10:08
- 4♃︎ Jupiter10:08 – 11:01
- 5♂︎ Mars11:01 – 11:54
- 6☉︎ Sun11:54 – 12:47
- 7♀︎ Venus12:47 – 13:40
- 8☿︎ Mercury13:40 – 14:33
- 9☽︎ Moon14:33 – 15:26
- 10♄︎ Saturn15:26 – 16:18
- 11♃︎ Jupiter16:18 – 17:11
- 12♂︎ Mars17:11 – 18:04
Night
- 1☉︎ Sun18:04 – 19:11
- 2♀︎ Venus19:11 – 20:19
- 3☿︎ Mercury20:19 – 21:26
- 4☽︎ Moon21:26 – 22:33
- 5♄︎ Saturn22:33 – 23:40
- 6♃︎ Jupiter23:40 – 00:47
- 7♂︎ Mars00:47 – 01:54
- 8☉︎ Sun01:54 – 03:02
- 9♀︎ Venus03:02 – 04:09
- 10☿︎ Mercury04:09 – 05:16
- 11☽︎ Moon05:16 – 06:23
- 12♄︎ Saturn06:23 – 07:30
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Wednesday, 29 April 2026, the Sun rises at 07:29 and sets at 18:04: the day lasts 10h 35m, that is twelve day hours of 53 min. The night, until the next sunrise at 07:30, lasts 13h 26m: twelve night hours of 1h 07m.
Which planet rules the first hour that day?
Mercury, from 07:29 to 08:22: 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.