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 Monday, 7 December 2026: day of the Moon
- Sunrise
- 04:59
- Sunset
- 18:29
- Next sunrise
- 04:59
A day hour lasts 1h 07m; a night hour, 53 min. Local time (America/Sao_Paulo).
Day
- 1☽︎ Moon04:59 – 06:06
- 2♄︎ Saturn06:06 – 07:14
- 3♃︎ Jupiter07:14 – 08:21
- 4♂︎ Mars08:21 – 09:29
- 5☉︎ Sun09:29 – 10:36
- 6♀︎ Venus10:36 – 11:44
- 7☿︎ Mercury11:44 – 12:51
- 8☽︎ Moon12:51 – 13:59
- 9♄︎ Saturn13:59 – 15:06
- 10♃︎ Jupiter15:06 – 16:14
- 11♂︎ Mars16:14 – 17:21
- 12☉︎ Sun17:21 – 18:29
Night
- 1♀︎ Venus18:29 – 19:21
- 2☿︎ Mercury19:21 – 20:14
- 3☽︎ Moon20:14 – 21:06
- 4♄︎ Saturn21:06 – 21:59
- 5♃︎ Jupiter21:59 – 22:51
- 6♂︎ Mars22:51 – 23:44
- 7☉︎ Sun23:44 – 00:36
- 8♀︎ Venus00:36 – 01:29
- 9☿︎ Mercury01:29 – 02:22
- 10☽︎ Moon02:22 – 03:14
- 11♄︎ Saturn03:14 – 04:07
- 12♃︎ Jupiter04:07 – 04:59
Other cities · Brazil
Questions
How are the planetary hours calculated in Rio de Janeiro?
On Monday, 7 December 2026, the Sun rises at 04:59 and sets at 18:29: the day lasts 13h 29m, that is twelve day hours of 1h 07m. The night, until the next sunrise at 04:59, lasts 10h 31m: twelve night hours of 53 min.
Which planet rules the first hour that day?
The Moon, from 04:59 to 06:06: 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.