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 Friday, 26 December 2025: day of Venus
- Sunrise
- 05:23
- Sunset
- 19:27
- Next sunrise
- 05:23
A day hour lasts 1h 10m; a night hour, 50 min. Local time (America/Sao_Paulo).
Day
- 1♀︎ Venus05:23 – 06:33
- 2☿︎ Mercury06:33 – 07:44
- 3☽︎ Moon07:44 – 08:54
- 4♄︎ Saturn08:54 – 10:04
- 5♃︎ Jupiter10:04 – 11:15
- 6♂︎ Mars11:15 – 12:25
- 7☉︎ Sun12:25 – 13:35
- 8♀︎ Venus13:35 – 14:46
- 9☿︎ Mercury14:46 – 15:56
- 10☽︎ Moon15:56 – 17:07
- 11♄︎ Saturn17:07 – 18:17
- 12♃︎ Jupiter18:17 – 19:27
Night
- 1♂︎ Mars19:27 – 20:17
- 2☉︎ Sun20:17 – 21:07
- 3♀︎ Venus21:07 – 21:56
- 4☿︎ Mercury21:56 – 22:46
- 5☽︎ Moon22:46 – 23:36
- 6♄︎ Saturn23:36 – 00:25
- 7♃︎ Jupiter00:25 – 01:15
- 8♂︎ Mars01:15 – 02:05
- 9☉︎ Sun02:05 – 02:54
- 10♀︎ Venus02:54 – 03:44
- 11☿︎ Mercury03:44 – 04:34
- 12☽︎ Moon04:34 – 05:23
Other cities · Brazil
Questions
How are the planetary hours calculated in Porto Alegre?
On Friday, 26 December 2025, the Sun rises at 05:23 and sets at 19:27: the day lasts 14h 04m, that is twelve day hours of 1h 10m. The night, until the next sunrise at 05:23, lasts 9h 56m: twelve night hours of 50 min.
Which planet rules the first hour that day?
Venus, from 05:23 to 06:33: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.