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 Wednesday, 12 August 2026: day of Mercury
- Sunrise
- 07:52
- Sunset
- 18:59
- Next sunrise
- 07:52
A day hour lasts 56 min; a night hour, 1h 04m. Local time (America/Argentina/Tucuman).
Day
- 1☿︎ Mercury07:52 – 08:48
- 2☽︎ Moon08:48 – 09:43
- 3♄︎ Saturn09:43 – 10:39
- 4♃︎ Jupiter10:39 – 11:34
- 5♂︎ Mars11:34 – 12:30
- 6☉︎ Sun12:30 – 13:26
- 7♀︎ Venus13:26 – 14:21
- 8☿︎ Mercury14:21 – 15:17
- 9☽︎ Moon15:17 – 16:12
- 10♄︎ Saturn16:12 – 17:08
- 11♃︎ Jupiter17:08 – 18:03
- 12♂︎ Mars18:03 – 18:59
Night
- 1☉︎ Sun18:59 – 20:03
- 2♀︎ Venus20:03 – 21:07
- 3☿︎ Mercury21:07 – 22:12
- 4☽︎ Moon22:12 – 23:16
- 5♄︎ Saturn23:16 – 00:21
- 6♃︎ Jupiter00:21 – 01:25
- 7♂︎ Mars01:25 – 02:30
- 8☉︎ Sun02:30 – 03:34
- 9♀︎ Venus03:34 – 04:38
- 10☿︎ Mercury04:38 – 05:43
- 11☽︎ Moon05:43 – 06:47
- 12♄︎ Saturn06:47 – 07:52
Other cities · Argentina
Questions
How are the planetary hours calculated in San Miguel de Tucumán?
On Wednesday, 12 August 2026, the Sun rises at 07:52 and sets at 18:59: the day lasts 11h 06m, that is twelve day hours of 56 min. The night, until the next sunrise at 07:52, lasts 12h 53m: twelve night hours of 1h 04m.
Which planet rules the first hour that day?
Mercury, from 07:52 to 08:48: 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.