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 Friday, 7 August 2026: day of Venus
- Sunrise
- 07:44
- Sunset
- 18:07
- Next sunrise
- 07:43
A day hour lasts 52 min; a night hour, 1h 08m. Local time (America/Argentina/Buenos_Aires).
Day
- 1♀︎ Venus07:44 – 08:36
- 2☿︎ Mercury08:36 – 09:28
- 3☽︎ Moon09:28 – 10:20
- 4♄︎ Saturn10:20 – 11:12
- 5♃︎ Jupiter11:12 – 12:04
- 6♂︎ Mars12:04 – 12:56
- 7☉︎ Sun12:56 – 13:48
- 8♀︎ Venus13:48 – 14:40
- 9☿︎ Mercury14:40 – 15:32
- 10☽︎ Moon15:32 – 16:24
- 11♄︎ Saturn16:24 – 17:15
- 12♃︎ Jupiter17:15 – 18:07
Night
- 1♂︎ Mars18:07 – 19:15
- 2☉︎ Sun19:15 – 20:23
- 3♀︎ Venus20:23 – 21:31
- 4☿︎ Mercury21:31 – 22:39
- 5☽︎ Moon22:39 – 23:47
- 6♄︎ Saturn23:47 – 00:55
- 7♃︎ Jupiter00:55 – 02:03
- 8♂︎ Mars02:03 – 03:11
- 9☉︎ Sun03:11 – 04:19
- 10♀︎ Venus04:19 – 05:27
- 11☿︎ Mercury05:27 – 06:35
- 12☽︎ Moon06:35 – 07:43
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Friday, 7 August 2026, the Sun rises at 07:44 and sets at 18:07: the day lasts 10h 23m, that is twelve day hours of 52 min. The night, until the next sunrise at 07:43, lasts 13h 35m: twelve night hours of 1h 08m.
Which planet rules the first hour that day?
Venus, from 07:44 to 08:36: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.