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 Sunday, 20 September 2026: day of the Sun
- Sunrise
- 06:42
- Sunset
- 18:45
- Next sunrise
- 06:41
A day hour lasts 1h 00m; a night hour, 1h 00m. Local time (America/Argentina/Buenos_Aires).
Day
- 1☉︎ Sun06:42 – 07:42
- 2♀︎ Venus07:42 – 08:43
- 3☿︎ Mercury08:43 – 09:43
- 4☽︎ Moon09:43 – 10:43
- 5♄︎ Saturn10:43 – 11:43
- 6♃︎ Jupiter11:43 – 12:43
- 7♂︎ Mars12:43 – 13:44
- 8☉︎ Sun13:44 – 14:44
- 9♀︎ Venus14:44 – 15:44
- 10☿︎ Mercury15:44 – 16:44
- 11☽︎ Moon16:44 – 17:44
- 12♄︎ Saturn17:44 – 18:45
Night
- 1♃︎ Jupiter18:45 – 19:44
- 2♂︎ Mars19:44 – 20:44
- 3☉︎ Sun20:44 – 21:44
- 4♀︎ Venus21:44 – 22:43
- 5☿︎ Mercury22:43 – 23:43
- 6☽︎ Moon23:43 – 00:43
- 7♄︎ Saturn00:43 – 01:42
- 8♃︎ Jupiter01:42 – 02:42
- 9♂︎ Mars02:42 – 03:42
- 10☉︎ Sun03:42 – 04:41
- 11♀︎ Venus04:41 – 05:41
- 12☿︎ Mercury05:41 – 06:41
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Sunday, 20 September 2026, the Sun rises at 06:42 and sets at 18:45: the day lasts 12h 03m, that is twelve day hours of 1h 00m. The night, until the next sunrise at 06:41, lasts 11h 56m: twelve night hours of 1h 00m.
Which planet rules the first hour that day?
The Sun, from 06:42 to 07:42: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.