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, 15 October 2026: day of Jupiter
- Sunrise
- 05:20
- Sunset
- 17:57
- Next sunrise
- 05:19
A day hour lasts 1h 03m; a night hour, 57 min. Local time (America/Sao_Paulo).
Day
- 1♃︎ Jupiter05:20 – 06:23
- 2♂︎ Mars06:23 – 07:26
- 3☉︎ Sun07:26 – 08:29
- 4♀︎ Venus08:29 – 09:32
- 5☿︎ Mercury09:32 – 10:35
- 6☽︎ Moon10:35 – 11:38
- 7♄︎ Saturn11:38 – 12:41
- 8♃︎ Jupiter12:41 – 13:44
- 9♂︎ Mars13:44 – 14:47
- 10☉︎ Sun14:47 – 15:50
- 11♀︎ Venus15:50 – 16:53
- 12☿︎ Mercury16:53 – 17:57
Night
- 1☽︎ Moon17:57 – 18:53
- 2♄︎ Saturn18:53 – 19:50
- 3♃︎ Jupiter19:50 – 20:47
- 4♂︎ Mars20:47 – 21:44
- 5☉︎ Sun21:44 – 22:41
- 6♀︎ Venus22:41 – 23:38
- 7☿︎ Mercury23:38 – 00:35
- 8☽︎ Moon00:35 – 01:31
- 9♄︎ Saturn01:31 – 02:28
- 10♃︎ Jupiter02:28 – 03:25
- 11♂︎ Mars03:25 – 04:22
- 12☉︎ Sun04:22 – 05:19
Other cities · Brazil
Questions
How are the planetary hours calculated in Rio de Janeiro?
On Thursday, 15 October 2026, the Sun rises at 05:20 and sets at 17:57: the day lasts 12h 37m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 05:19, lasts 11h 22m: twelve night hours of 57 min.
Which planet rules the first hour that day?
Jupiter, from 05:20 to 06:23: 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.