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 Wednesday, 28 October 2026: day of Mercury
- Sunrise
- 05:10
- Sunset
- 18:03
- Next sunrise
- 05:09
A day hour lasts 1h 04m; a night hour, 56 min. Local time (America/Sao_Paulo).
Day
- 1☿︎ Mercury05:10 – 06:14
- 2☽︎ Moon06:14 – 07:18
- 3♄︎ Saturn07:18 – 08:23
- 4♃︎ Jupiter08:23 – 09:27
- 5♂︎ Mars09:27 – 10:32
- 6☉︎ Sun10:32 – 11:36
- 7♀︎ Venus11:36 – 12:41
- 8☿︎ Mercury12:41 – 13:45
- 9☽︎ Moon13:45 – 14:49
- 10♄︎ Saturn14:49 – 15:54
- 11♃︎ Jupiter15:54 – 16:58
- 12♂︎ Mars16:58 – 18:03
Night
- 1☉︎ Sun18:03 – 18:58
- 2♀︎ Venus18:58 – 19:54
- 3☿︎ Mercury19:54 – 20:49
- 4☽︎ Moon20:49 – 21:45
- 5♄︎ Saturn21:45 – 22:40
- 6♃︎ Jupiter22:40 – 23:36
- 7♂︎ Mars23:36 – 00:31
- 8☉︎ Sun00:31 – 01:27
- 9♀︎ Venus01:27 – 02:22
- 10☿︎ Mercury02:22 – 03:18
- 11☽︎ Moon03:18 – 04:13
- 12♄︎ Saturn04:13 – 05:09
Other cities · Brazil
Questions
How are the planetary hours calculated in Rio de Janeiro?
On Wednesday, 28 October 2026, the Sun rises at 05:10 and sets at 18:03: the day lasts 12h 53m, that is twelve day hours of 1h 04m. The night, until the next sunrise at 05:09, lasts 11h 06m: twelve night hours of 56 min.
Which planet rules the first hour that day?
Mercury, from 05:10 to 06:14: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.