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, 4 December 2026: day of Venus
- Sunrise
- 05:16
- Sunset
- 19:14
- Next sunrise
- 05:16
A day hour lasts 1h 10m; a night hour, 50 min. Local time (America/Sao_Paulo).
Day
- 1♀︎ Venus05:16 – 06:25
- 2☿︎ Mercury06:25 – 07:35
- 3☽︎ Moon07:35 – 08:45
- 4♄︎ Saturn08:45 – 09:55
- 5♃︎ Jupiter09:55 – 11:05
- 6♂︎ Mars11:05 – 12:15
- 7☉︎ Sun12:15 – 13:25
- 8♀︎ Venus13:25 – 14:35
- 9☿︎ Mercury14:35 – 15:44
- 10☽︎ Moon15:44 – 16:54
- 11♄︎ Saturn16:54 – 18:04
- 12♃︎ Jupiter18:04 – 19:14
Night
- 1♂︎ Mars19:14 – 20:04
- 2☉︎ Sun20:04 – 20:54
- 3♀︎ Venus20:54 – 21:44
- 4☿︎ Mercury21:44 – 22:35
- 5☽︎ Moon22:35 – 23:25
- 6♄︎ Saturn23:25 – 00:15
- 7♃︎ Jupiter00:15 – 01:05
- 8♂︎ Mars01:05 – 01:55
- 9☉︎ Sun01:55 – 02:45
- 10♀︎ Venus02:45 – 03:35
- 11☿︎ Mercury03:35 – 04:25
- 12☽︎ Moon04:25 – 05:16
Other cities · Brazil
Questions
How are the planetary hours calculated in Porto Alegre?
On Friday, 4 December 2026, the Sun rises at 05:16 and sets at 19:14: the day lasts 13h 58m, that is twelve day hours of 1h 10m. The night, until the next sunrise at 05:16, lasts 10h 02m: twelve night hours of 50 min.
Which planet rules the first hour that day?
Venus, from 05:16 to 06:25: 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.