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, 30 July 2025: day of Mercury
- Sunrise
- 08:01
- Sunset
- 18:52
- Next sunrise
- 08:01
A day hour lasts 54 min; a night hour, 1h 06m. Local time (America/Argentina/Tucuman).
Day
- 1☿︎ Mercury08:01 – 08:56
- 2☽︎ Moon08:56 – 09:50
- 3♄︎ Saturn09:50 – 10:44
- 4♃︎ Jupiter10:44 – 11:38
- 5♂︎ Mars11:38 – 12:33
- 6☉︎ Sun12:33 – 13:27
- 7♀︎ Venus13:27 – 14:21
- 8☿︎ Mercury14:21 – 15:15
- 9☽︎ Moon15:15 – 16:10
- 10♄︎ Saturn16:10 – 17:04
- 11♃︎ Jupiter17:04 – 17:58
- 12♂︎ Mars17:58 – 18:52
Night
- 1☉︎ Sun18:52 – 19:58
- 2♀︎ Venus19:58 – 21:04
- 3☿︎ Mercury21:04 – 22:09
- 4☽︎ Moon22:09 – 23:15
- 5♄︎ Saturn23:15 – 00:21
- 6♃︎ Jupiter00:21 – 01:27
- 7♂︎ Mars01:27 – 02:32
- 8☉︎ Sun02:32 – 03:38
- 9♀︎ Venus03:38 – 04:44
- 10☿︎ Mercury04:44 – 05:49
- 11☽︎ Moon05:49 – 06:55
- 12♄︎ Saturn06:55 – 08:01
Other cities · Argentina
Questions
How are the planetary hours calculated in San Miguel de Tucumán?
On Wednesday, 30 July 2025, the Sun rises at 08:01 and sets at 18:52: the day lasts 10h 51m, that is twelve day hours of 54 min. The night, until the next sunrise at 08:01, lasts 13h 09m: twelve night hours of 1h 06m.
Which planet rules the first hour that day?
Mercury, from 08:01 to 08:56: 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.