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 Tuesday, 13 October 2026: day of Mars
- Sunrise
- 05:22
- Sunset
- 17:56
- Next sunrise
- 05:21
A day hour lasts 1h 03m; a night hour, 57 min. Local time (America/Sao_Paulo).
Day
- 1♂︎ Mars05:22 – 06:24
- 2☉︎ Sun06:24 – 07:27
- 3♀︎ Venus07:27 – 08:30
- 4☿︎ Mercury08:30 – 09:33
- 5☽︎ Moon09:33 – 10:36
- 6♄︎ Saturn10:36 – 11:39
- 7♃︎ Jupiter11:39 – 12:41
- 8♂︎ Mars12:41 – 13:44
- 9☉︎ Sun13:44 – 14:47
- 10♀︎ Venus14:47 – 15:50
- 11☿︎ Mercury15:50 – 16:53
- 12☽︎ Moon16:53 – 17:56
Night
- 1♄︎ Saturn17:56 – 18:53
- 2♃︎ Jupiter18:53 – 19:50
- 3♂︎ Mars19:50 – 20:47
- 4☉︎ Sun20:47 – 21:44
- 5♀︎ Venus21:44 – 22:41
- 6☿︎ Mercury22:41 – 23:38
- 7☽︎ Moon23:38 – 00:35
- 8♄︎ Saturn00:35 – 01:32
- 9♃︎ Jupiter01:32 – 02:29
- 10♂︎ Mars02:29 – 03:26
- 11☉︎ Sun03:26 – 04:24
- 12♀︎ Venus04:24 – 05:21
Other cities · Brazil
Questions
How are the planetary hours calculated in Rio de Janeiro?
On Tuesday, 13 October 2026, the Sun rises at 05:22 and sets at 17:56: the day lasts 12h 34m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 05:21, lasts 11h 25m: twelve night hours of 57 min.
Which planet rules the first hour that day?
Mars, from 05:22 to 06:24: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.