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 Thursday, 3 December 2026: day of Jupiter
- Sunrise
- 04:58
- Sunset
- 18:26
- Next sunrise
- 04:59
A day hour lasts 1h 07m; a night hour, 53 min. Local time (America/Sao_Paulo).
Day
- 1♃︎ Jupiter04:58 – 06:06
- 2♂︎ Mars06:06 – 07:13
- 3☉︎ Sun07:13 – 08:20
- 4♀︎ Venus08:20 – 09:28
- 5☿︎ Mercury09:28 – 10:35
- 6☽︎ Moon10:35 – 11:42
- 7♄︎ Saturn11:42 – 12:49
- 8♃︎ Jupiter12:49 – 13:57
- 9♂︎ Mars13:57 – 15:04
- 10☉︎ Sun15:04 – 16:11
- 11♀︎ Venus16:11 – 17:19
- 12☿︎ Mercury17:19 – 18:26
Night
- 1☽︎ Moon18:26 – 19:19
- 2♄︎ Saturn19:19 – 20:11
- 3♃︎ Jupiter20:11 – 21:04
- 4♂︎ Mars21:04 – 21:57
- 5☉︎ Sun21:57 – 22:49
- 6♀︎ Venus22:49 – 23:42
- 7☿︎ Mercury23:42 – 00:35
- 8☽︎ Moon00:35 – 01:28
- 9♄︎ Saturn01:28 – 02:20
- 10♃︎ Jupiter02:20 – 03:13
- 11♂︎ Mars03:13 – 04:06
- 12☉︎ Sun04:06 – 04:59
Other cities · Brazil
Questions
How are the planetary hours calculated in Rio de Janeiro?
On Thursday, 3 December 2026, the Sun rises at 04:58 and sets at 18:26: the day lasts 13h 27m, that is twelve day hours of 1h 07m. The night, until the next sunrise at 04:59, lasts 10h 33m: twelve night hours of 53 min.
Which planet rules the first hour that day?
Jupiter, from 04:58 to 06:06: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.