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, 18 October 2026: day of the Sun
- Sunrise
- 06:00
- Sunset
- 19:10
- Next sunrise
- 05:59
A day hour lasts 1h 06m; a night hour, 54 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1☉︎ Sun06:00 – 07:06
- 2♀︎ Venus07:06 – 08:12
- 3☿︎ Mercury08:12 – 09:18
- 4☽︎ Moon09:18 – 10:23
- 5♄︎ Saturn10:23 – 11:29
- 6♃︎ Jupiter11:29 – 12:35
- 7♂︎ Mars12:35 – 13:41
- 8☉︎ Sun13:41 – 14:47
- 9♀︎ Venus14:47 – 15:53
- 10☿︎ Mercury15:53 – 16:59
- 11☽︎ Moon16:59 – 18:05
- 12♄︎ Saturn18:05 – 19:10
Night
- 1♃︎ Jupiter19:10 – 20:04
- 2♂︎ Mars20:04 – 20:58
- 3☉︎ Sun20:58 – 21:52
- 4♀︎ Venus21:52 – 22:46
- 5☿︎ Mercury22:46 – 23:40
- 6☽︎ Moon23:40 – 00:34
- 7♄︎ Saturn00:34 – 01:29
- 8♃︎ Jupiter01:29 – 02:23
- 9♂︎ Mars02:23 – 03:17
- 10☉︎ Sun03:17 – 04:11
- 11♀︎ Venus04:11 – 05:05
- 12☿︎ Mercury05:05 – 05:59
Other cities · Argentina
Questions
How are the planetary hours calculated in Mar del Plata?
On Sunday, 18 October 2026, the Sun rises at 06:00 and sets at 19:10: the day lasts 13h 10m, that is twelve day hours of 1h 06m. The night, until the next sunrise at 05:59, lasts 10h 48m: twelve night hours of 54 min.
Which planet rules the first hour that day?
The Sun, from 06:00 to 07:06: 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.