Planetary hours
in San Miguel de Tucumán.
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 Saturday, 17 October 2026: day of Saturn
- Sunrise
- 06:43
- Sunset
- 19:29
- Next sunrise
- 06:42
A day hour lasts 1h 04m; a night hour, 56 min. Local time (America/Argentina/Tucuman).
Day
- 1♄︎ Saturn06:43 – 07:47
- 2♃︎ Jupiter07:47 – 08:51
- 3♂︎ Mars08:51 – 09:54
- 4☉︎ Sun09:54 – 10:58
- 5♀︎ Venus10:58 – 12:02
- 6☿︎ Mercury12:02 – 13:06
- 7☽︎ Moon13:06 – 14:10
- 8♄︎ Saturn14:10 – 15:14
- 9♃︎ Jupiter15:14 – 16:17
- 10♂︎ Mars16:17 – 17:21
- 11☉︎ Sun17:21 – 18:25
- 12♀︎ Venus18:25 – 19:29
Night
- 1☿︎ Mercury19:29 – 20:25
- 2☽︎ Moon20:25 – 21:21
- 3♄︎ Saturn21:21 – 22:17
- 4♃︎ Jupiter22:17 – 23:13
- 5♂︎ Mars23:13 – 00:09
- 6☉︎ Sun00:09 – 01:05
- 7♀︎ Venus01:05 – 02:01
- 8☿︎ Mercury02:01 – 02:58
- 9☽︎ Moon02:58 – 03:54
- 10♄︎ Saturn03:54 – 04:50
- 11♃︎ Jupiter04:50 – 05:46
- 12♂︎ Mars05:46 – 06:42
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Questions
How are the planetary hours calculated in San Miguel de Tucumán?
On Saturday, 17 October 2026, the Sun rises at 06:43 and sets at 19:29: the day lasts 12h 46m, that is twelve day hours of 1h 04m. The night, until the next sunrise at 06:42, lasts 11h 13m: twelve night hours of 56 min.
Which planet rules the first hour that day?
Saturn, from 06:43 to 07:47: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.