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, 23 August 2025: day of Saturn
- Sunrise
- 07:42
- Sunset
- 19:04
- Next sunrise
- 07:41
A day hour lasts 57 min; a night hour, 1h 03m. Local time (America/Argentina/Tucuman).
Day
- 1♄︎ Saturn07:42 – 08:39
- 2♃︎ Jupiter08:39 – 09:36
- 3♂︎ Mars09:36 – 10:33
- 4☉︎ Sun10:33 – 11:29
- 5♀︎ Venus11:29 – 12:26
- 6☿︎ Mercury12:26 – 13:23
- 7☽︎ Moon13:23 – 14:20
- 8♄︎ Saturn14:20 – 15:17
- 9♃︎ Jupiter15:17 – 16:13
- 10♂︎ Mars16:13 – 17:10
- 11☉︎ Sun17:10 – 18:07
- 12♀︎ Venus18:07 – 19:04
Night
- 1☿︎ Mercury19:04 – 20:07
- 2☽︎ Moon20:07 – 21:10
- 3♄︎ Saturn21:10 – 22:13
- 4♃︎ Jupiter22:13 – 23:16
- 5♂︎ Mars23:16 – 00:19
- 6☉︎ Sun00:19 – 01:23
- 7♀︎ Venus01:23 – 02:26
- 8☿︎ Mercury02:26 – 03:29
- 9☽︎ Moon03:29 – 04:32
- 10♄︎ Saturn04:32 – 05:35
- 11♃︎ Jupiter05:35 – 06:38
- 12♂︎ Mars06:38 – 07:41
Other cities · Argentina
Questions
How are the planetary hours calculated in San Miguel de Tucumán?
On Saturday, 23 August 2025, the Sun rises at 07:42 and sets at 19:04: the day lasts 11h 22m, that is twelve day hours of 57 min. The night, until the next sunrise at 07:41, lasts 12h 37m: twelve night hours of 1h 03m.
Which planet rules the first hour that day?
Saturn, from 07:42 to 08:39: 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.