Planetary hours
in Brasília.
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 Sunday, 20 December 2026: day of the Sun
- Sunrise
- 05:37
- Sunset
- 18:41
- Next sunrise
- 05:37
A day hour lasts 1h 05m; a night hour, 55 min. Local time (America/Sao_Paulo).
Day
- 1☉︎ Sun05:37 – 06:42
- 2♀︎ Venus06:42 – 07:47
- 3☿︎ Mercury07:47 – 08:53
- 4☽︎ Moon08:53 – 09:58
- 5♄︎ Saturn09:58 – 11:04
- 6♃︎ Jupiter11:04 – 12:09
- 7♂︎ Mars12:09 – 13:14
- 8☉︎ Sun13:14 – 14:20
- 9♀︎ Venus14:20 – 15:25
- 10☿︎ Mercury15:25 – 16:30
- 11☽︎ Moon16:30 – 17:36
- 12♄︎ Saturn17:36 – 18:41
Night
- 1♃︎ Jupiter18:41 – 19:36
- 2♂︎ Mars19:36 – 20:30
- 3☉︎ Sun20:30 – 21:25
- 4♀︎ Venus21:25 – 22:20
- 5☿︎ Mercury22:20 – 23:14
- 6☽︎ Moon23:14 – 00:09
- 7♄︎ Saturn00:09 – 01:04
- 8♃︎ Jupiter01:04 – 01:58
- 9♂︎ Mars01:58 – 02:53
- 10☉︎ Sun02:53 – 03:48
- 11♀︎ Venus03:48 – 04:43
- 12☿︎ Mercury04:43 – 05:37
Other cities · Brazil
Questions
How are the planetary hours calculated in Brasília?
On Sunday, 20 December 2026, the Sun rises at 05:37 and sets at 18:41: the day lasts 13h 04m, that is twelve day hours of 1h 05m. The night, until the next sunrise at 05:37, lasts 10h 56m: twelve night hours of 55 min.
Which planet rules the first hour that day?
The Sun, from 05:37 to 06:42: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.