Planetary hours
in Porto Alegre.
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, 12 December 2026: day of Saturn
- Sunrise
- 05:17
- Sunset
- 19:20
- Next sunrise
- 05:17
A day hour lasts 1h 10m; a night hour, 50 min. Local time (America/Sao_Paulo).
Day
- 1♄︎ Saturn05:17 – 06:27
- 2♃︎ Jupiter06:27 – 07:37
- 3♂︎ Mars07:37 – 08:47
- 4☉︎ Sun08:47 – 09:58
- 5♀︎ Venus09:58 – 11:08
- 6☿︎ Mercury11:08 – 12:18
- 7☽︎ Moon12:18 – 13:28
- 8♄︎ Saturn13:28 – 14:39
- 9♃︎ Jupiter14:39 – 15:49
- 10♂︎ Mars15:49 – 16:59
- 11☉︎ Sun16:59 – 18:10
- 12♀︎ Venus18:10 – 19:20
Night
- 1☿︎ Mercury19:20 – 20:10
- 2☽︎ Moon20:10 – 20:59
- 3♄︎ Saturn20:59 – 21:49
- 4♃︎ Jupiter21:49 – 22:39
- 5♂︎ Mars22:39 – 23:29
- 6☉︎ Sun23:29 – 00:18
- 7♀︎ Venus00:18 – 01:08
- 8☿︎ Mercury01:08 – 01:58
- 9☽︎ Moon01:58 – 02:48
- 10♄︎ Saturn02:48 – 03:37
- 11♃︎ Jupiter03:37 – 04:27
- 12♂︎ Mars04:27 – 05:17
Other cities · Brazil
Questions
How are the planetary hours calculated in Porto Alegre?
On Saturday, 12 December 2026, the Sun rises at 05:17 and sets at 19:20: the day lasts 14h 03m, that is twelve day hours of 1h 10m. The night, until the next sunrise at 05:17, lasts 9h 57m: twelve night hours of 50 min.
Which planet rules the first hour that day?
Saturn, from 05:17 to 06:27: 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.