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, 19 December 2026: day of Saturn
- Sunrise
- 05:03
- Sunset
- 18:36
- Next sunrise
- 05:03
A day hour lasts 1h 08m; a night hour, 52 min. Local time (America/Sao_Paulo).
Day
- 1♄︎ Saturn05:03 – 06:11
- 2♃︎ Jupiter06:11 – 07:18
- 3♂︎ Mars07:18 – 08:26
- 4☉︎ Sun08:26 – 09:34
- 5♀︎ Venus09:34 – 10:42
- 6☿︎ Mercury10:42 – 11:49
- 7☽︎ Moon11:49 – 12:57
- 8♄︎ Saturn12:57 – 14:05
- 9♃︎ Jupiter14:05 – 15:13
- 10♂︎ Mars15:13 – 16:20
- 11☉︎ Sun16:20 – 17:28
- 12♀︎ Venus17:28 – 18:36
Night
- 1☿︎ Mercury18:36 – 19:28
- 2☽︎ Moon19:28 – 20:20
- 3♄︎ Saturn20:20 – 21:13
- 4♃︎ Jupiter21:13 – 22:05
- 5♂︎ Mars22:05 – 22:57
- 6☉︎ Sun22:57 – 23:50
- 7♀︎ Venus23:50 – 00:42
- 8☿︎ Mercury00:42 – 01:34
- 9☽︎ Moon01:34 – 02:27
- 10♄︎ Saturn02:27 – 03:19
- 11♃︎ Jupiter03:19 – 04:11
- 12♂︎ Mars04:11 – 05:03
Other cities · Brazil
Questions
How are the planetary hours calculated in Rio de Janeiro?
On Saturday, 19 December 2026, the Sun rises at 05:03 and sets at 18:36: the day lasts 13h 33m, that is twelve day hours of 1h 08m. The night, until the next sunrise at 05:03, lasts 10h 28m: twelve night hours of 52 min.
Which planet rules the first hour that day?
Saturn, from 05:03 to 06:11: 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.