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 Monday, 12 January 2026: day of the Moon
- Sunrise
- 05:35
- Sunset
- 19:30
- Next sunrise
- 05:36
A day hour lasts 1h 10m; a night hour, 51 min. Local time (America/Sao_Paulo).
Day
- 1☽︎ Moon05:35 – 06:45
- 2♄︎ Saturn06:45 – 07:55
- 3♃︎ Jupiter07:55 – 09:04
- 4♂︎ Mars09:04 – 10:14
- 5☉︎ Sun10:14 – 11:23
- 6♀︎ Venus11:23 – 12:33
- 7☿︎ Mercury12:33 – 13:42
- 8☽︎ Moon13:42 – 14:52
- 9♄︎ Saturn14:52 – 16:01
- 10♃︎ Jupiter16:01 – 17:11
- 11♂︎ Mars17:11 – 18:20
- 12☉︎ Sun18:20 – 19:30
Night
- 1♀︎ Venus19:30 – 20:20
- 2☿︎ Mercury20:20 – 21:11
- 3☽︎ Moon21:11 – 22:01
- 4♄︎ Saturn22:01 – 22:52
- 5♃︎ Jupiter22:52 – 23:43
- 6♂︎ Mars23:43 – 00:33
- 7☉︎ Sun00:33 – 01:24
- 8♀︎ Venus01:24 – 02:14
- 9☿︎ Mercury02:14 – 03:05
- 10☽︎ Moon03:05 – 03:55
- 11♄︎ Saturn03:55 – 04:46
- 12♃︎ Jupiter04:46 – 05:36
Other cities · Brazil
Questions
How are the planetary hours calculated in Porto Alegre?
On Monday, 12 January 2026, the Sun rises at 05:35 and sets at 19:30: the day lasts 13h 54m, that is twelve day hours of 1h 10m. The night, until the next sunrise at 05:36, lasts 10h 06m: twelve night hours of 51 min.
Which planet rules the first hour that day?
The Moon, from 05:35 to 06:45: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.