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, 10 January 2027: day of the Sun
- Sunrise
- 05:39
- Sunset
- 20:15
- Next sunrise
- 05:40
A day hour lasts 1h 13m; a night hour, 47 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1☉︎ Sun05:39 – 06:52
- 2♀︎ Venus06:52 – 08:05
- 3☿︎ Mercury08:05 – 09:18
- 4☽︎ Moon09:18 – 10:31
- 5♄︎ Saturn10:31 – 11:44
- 6♃︎ Jupiter11:44 – 12:57
- 7♂︎ Mars12:57 – 14:10
- 8☉︎ Sun14:10 – 15:23
- 9♀︎ Venus15:23 – 16:36
- 10☿︎ Mercury16:36 – 17:49
- 11☽︎ Moon17:49 – 19:02
- 12♄︎ Saturn19:02 – 20:15
Night
- 1♃︎ Jupiter20:15 – 21:02
- 2♂︎ Mars21:02 – 21:49
- 3☉︎ Sun21:49 – 22:36
- 4♀︎ Venus22:36 – 23:23
- 5☿︎ Mercury23:23 – 00:11
- 6☽︎ Moon00:11 – 00:58
- 7♄︎ Saturn00:58 – 01:45
- 8♃︎ Jupiter01:45 – 02:32
- 9♂︎ Mars02:32 – 03:19
- 10☉︎ Sun03:19 – 04:06
- 11♀︎ Venus04:06 – 04:53
- 12☿︎ Mercury04:53 – 05:40
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Sunday, 10 January 2027, the Sun rises at 05:39 and sets at 20:15: the day lasts 14h 36m, that is twelve day hours of 1h 13m. The night, until the next sunrise at 05:40, lasts 9h 25m: twelve night hours of 47 min.
Which planet rules the first hour that day?
The Sun, from 05:39 to 06:52: 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.