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, 21 October 2026: day of Mercury
- Sunrise
- 06:39
- Sunset
- 19:31
- Next sunrise
- 06:38
A day hour lasts 1h 04m; a night hour, 56 min. Local time (America/Argentina/Tucuman).
Day
- 1☿︎ Mercury06:39 – 07:43
- 2☽︎ Moon07:43 – 08:48
- 3♄︎ Saturn08:48 – 09:52
- 4♃︎ Jupiter09:52 – 10:56
- 5♂︎ Mars10:56 – 12:01
- 6☉︎ Sun12:01 – 13:05
- 7♀︎ Venus13:05 – 14:09
- 8☿︎ Mercury14:09 – 15:14
- 9☽︎ Moon15:14 – 16:18
- 10♄︎ Saturn16:18 – 17:22
- 11♃︎ Jupiter17:22 – 18:27
- 12♂︎ Mars18:27 – 19:31
Night
- 1☉︎ Sun19:31 – 20:27
- 2♀︎ Venus20:27 – 21:22
- 3☿︎ Mercury21:22 – 22:18
- 4☽︎ Moon22:18 – 23:14
- 5♄︎ Saturn23:14 – 00:09
- 6♃︎ Jupiter00:09 – 01:05
- 7♂︎ Mars01:05 – 02:00
- 8☉︎ Sun02:00 – 02:56
- 9♀︎ Venus02:56 – 03:51
- 10☿︎ Mercury03:51 – 04:47
- 11☽︎ Moon04:47 – 05:43
- 12♄︎ Saturn05:43 – 06:38
Other cities · Argentina
Questions
How are the planetary hours calculated in San Miguel de Tucumán?
On Wednesday, 21 October 2026, the Sun rises at 06:39 and sets at 19:31: the day lasts 12h 52m, that is twelve day hours of 1h 04m. The night, until the next sunrise at 06:38, lasts 11h 07m: twelve night hours of 56 min.
Which planet rules the first hour that day?
Mercury, from 06:39 to 07:43: 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.