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, 18 November 2026: day of Mercury
- Sunrise
- 05:27
- Sunset
- 19:44
- Next sunrise
- 05:26
A day hour lasts 1h 11m; a night hour, 49 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1☿︎ Mercury05:27 – 06:38
- 2☽︎ Moon06:38 – 07:50
- 3♄︎ Saturn07:50 – 09:01
- 4♃︎ Jupiter09:01 – 10:12
- 5♂︎ Mars10:12 – 11:24
- 6☉︎ Sun11:24 – 12:35
- 7♀︎ Venus12:35 – 13:47
- 8☿︎ Mercury13:47 – 14:58
- 9☽︎ Moon14:58 – 16:09
- 10♄︎ Saturn16:09 – 17:21
- 11♃︎ Jupiter17:21 – 18:32
- 12♂︎ Mars18:32 – 19:44
Night
- 1☉︎ Sun19:44 – 20:32
- 2♀︎ Venus20:32 – 21:21
- 3☿︎ Mercury21:21 – 22:09
- 4☽︎ Moon22:09 – 22:58
- 5♄︎ Saturn22:58 – 23:46
- 6♃︎ Jupiter23:46 – 00:35
- 7♂︎ Mars00:35 – 01:23
- 8☉︎ Sun01:23 – 02:12
- 9♀︎ Venus02:12 – 03:01
- 10☿︎ Mercury03:01 – 03:49
- 11☽︎ Moon03:49 – 04:38
- 12♄︎ Saturn04:38 – 05:26
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Wednesday, 18 November 2026, the Sun rises at 05:27 and sets at 19:44: the day lasts 14h 17m, that is twelve day hours of 1h 11m. The night, until the next sunrise at 05:26, lasts 9h 43m: twelve night hours of 49 min.
Which planet rules the first hour that day?
Mercury, from 05:27 to 06:38: 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.