Planetary hours
in Rio de Janeiro.
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, 8 November 2025: day of Saturn
- Sunrise
- 05:03
- Sunset
- 18:09
- Next sunrise
- 05:03
A day hour lasts 1h 06m; a night hour, 54 min. Local time (America/Sao_Paulo).
Day
- 1♄︎ Saturn05:03 – 06:09
- 2♃︎ Jupiter06:09 – 07:14
- 3♂︎ Mars07:14 – 08:20
- 4☉︎ Sun08:20 – 09:25
- 5♀︎ Venus09:25 – 10:31
- 6☿︎ Mercury10:31 – 11:36
- 7☽︎ Moon11:36 – 12:42
- 8♄︎ Saturn12:42 – 13:47
- 9♃︎ Jupiter13:47 – 14:53
- 10♂︎ Mars14:53 – 15:58
- 11☉︎ Sun15:58 – 17:04
- 12♀︎ Venus17:04 – 18:09
Night
- 1☿︎ Mercury18:09 – 19:04
- 2☽︎ Moon19:04 – 19:58
- 3♄︎ Saturn19:58 – 20:53
- 4♃︎ Jupiter20:53 – 21:47
- 5♂︎ Mars21:47 – 22:41
- 6☉︎ Sun22:41 – 23:36
- 7♀︎ Venus23:36 – 00:30
- 8☿︎ Mercury00:30 – 01:25
- 9☽︎ Moon01:25 – 02:19
- 10♄︎ Saturn02:19 – 03:14
- 11♃︎ Jupiter03:14 – 04:08
- 12♂︎ Mars04:08 – 05:03
Other cities · Brazil
Questions
How are the planetary hours calculated in Rio de Janeiro?
On Saturday, 8 November 2025, the Sun rises at 05:03 and sets at 18:09: the day lasts 13h 06m, that is twelve day hours of 1h 06m. The night, until the next sunrise at 05:03, lasts 10h 53m: twelve night hours of 54 min.
Which planet rules the first hour that day?
Saturn, from 05:03 to 06:09: 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.