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, 18 September 2026: day of Venus
- Sunrise
- 06:19
- Sunset
- 18:19
- Next sunrise
- 06:18
A day hour lasts 1h 00m; a night hour, 1h 00m. Local time (America/Sao_Paulo).
Day
- 1♀︎ Venus06:19 – 07:19
- 2☿︎ Mercury07:19 – 08:19
- 3☽︎ Moon08:19 – 09:19
- 4♄︎ Saturn09:19 – 10:19
- 5♃︎ Jupiter10:19 – 11:19
- 6♂︎ Mars11:19 – 12:19
- 7☉︎ Sun12:19 – 13:19
- 8♀︎ Venus13:19 – 14:19
- 9☿︎ Mercury14:19 – 15:19
- 10☽︎ Moon15:19 – 16:19
- 11♄︎ Saturn16:19 – 17:19
- 12♃︎ Jupiter17:19 – 18:19
Night
- 1♂︎ Mars18:19 – 19:18
- 2☉︎ Sun19:18 – 20:18
- 3♀︎ Venus20:18 – 21:18
- 4☿︎ Mercury21:18 – 22:18
- 5☽︎ Moon22:18 – 23:18
- 6♄︎ Saturn23:18 – 00:18
- 7♃︎ Jupiter00:18 – 01:18
- 8♂︎ Mars01:18 – 02:18
- 9☉︎ Sun02:18 – 03:18
- 10♀︎ Venus03:18 – 04:18
- 11☿︎ Mercury04:18 – 05:18
- 12☽︎ Moon05:18 – 06:18
Other cities · Brazil
Questions
How are the planetary hours calculated in Porto Alegre?
On Friday, 18 September 2026, the Sun rises at 06:19 and sets at 18:19: the day lasts 12h 00m, that is twelve day hours of 1h 00m. The night, until the next sunrise at 06:18, lasts 11h 59m: twelve night hours of 1h 00m.
Which planet rules the first hour that day?
Venus, from 06:19 to 07:19: 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.