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, 4 October 2026: day of the Sun
- Sunrise
- 06:20
- Sunset
- 18:57
- Next sunrise
- 06:19
A day hour lasts 1h 03m; a night hour, 57 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1☉︎ Sun06:20 – 07:23
- 2♀︎ Venus07:23 – 08:26
- 3☿︎ Mercury08:26 – 09:30
- 4☽︎ Moon09:30 – 10:33
- 5♄︎ Saturn10:33 – 11:36
- 6♃︎ Jupiter11:36 – 12:39
- 7♂︎ Mars12:39 – 13:42
- 8☉︎ Sun13:42 – 14:45
- 9♀︎ Venus14:45 – 15:48
- 10☿︎ Mercury15:48 – 16:51
- 11☽︎ Moon16:51 – 17:54
- 12♄︎ Saturn17:54 – 18:57
Night
- 1♃︎ Jupiter18:57 – 19:54
- 2♂︎ Mars19:54 – 20:51
- 3☉︎ Sun20:51 – 21:48
- 4♀︎ Venus21:48 – 22:44
- 5☿︎ Mercury22:44 – 23:41
- 6☽︎ Moon23:41 – 00:38
- 7♄︎ Saturn00:38 – 01:35
- 8♃︎ Jupiter01:35 – 02:32
- 9♂︎ Mars02:32 – 03:28
- 10☉︎ Sun03:28 – 04:25
- 11♀︎ Venus04:25 – 05:22
- 12☿︎ Mercury05:22 – 06:19
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Sunday, 4 October 2026, the Sun rises at 06:20 and sets at 18:57: the day lasts 12h 37m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 06:19, lasts 11h 22m: twelve night hours of 57 min.
Which planet rules the first hour that day?
The Sun, from 06:20 to 07:23: 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.