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, 23 August 2026: day of the Sun
- Sunrise
- 07:24
- Sunset
- 18:21
- Next sunrise
- 07:23
A day hour lasts 55 min; a night hour, 1h 05m. Local time (America/Argentina/Buenos_Aires).
Day
- 1☉︎ Sun07:24 – 08:19
- 2♀︎ Venus08:19 – 09:14
- 3☿︎ Mercury09:14 – 10:08
- 4☽︎ Moon10:08 – 11:03
- 5♄︎ Saturn11:03 – 11:58
- 6♃︎ Jupiter11:58 – 12:53
- 7♂︎ Mars12:53 – 13:47
- 8☉︎ Sun13:47 – 14:42
- 9♀︎ Venus14:42 – 15:37
- 10☿︎ Mercury15:37 – 16:32
- 11☽︎ Moon16:32 – 17:26
- 12♄︎ Saturn17:26 – 18:21
Night
- 1♃︎ Jupiter18:21 – 19:26
- 2♂︎ Mars19:26 – 20:31
- 3☉︎ Sun20:31 – 21:36
- 4♀︎ Venus21:36 – 22:42
- 5☿︎ Mercury22:42 – 23:47
- 6☽︎ Moon23:47 – 00:52
- 7♄︎ Saturn00:52 – 01:57
- 8♃︎ Jupiter01:57 – 03:02
- 9♂︎ Mars03:02 – 04:07
- 10☉︎ Sun04:07 – 05:12
- 11♀︎ Venus05:12 – 06:18
- 12☿︎ Mercury06:18 – 07:23
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Sunday, 23 August 2026, the Sun rises at 07:24 and sets at 18:21: the day lasts 10h 57m, that is twelve day hours of 55 min. The night, until the next sunrise at 07:23, lasts 13h 02m: twelve night hours of 1h 05m.
Which planet rules the first hour that day?
The Sun, from 07:24 to 08:19: 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.