Planetary hours
in Guarulhos.
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 Friday, 18 December 2026: day of Venus
- Sunrise
- 05:15
- Sunset
- 18:50
- Next sunrise
- 05:15
A day hour lasts 1h 08m; a night hour, 52 min. Local time (America/Sao_Paulo).
Day
- 1♀︎ Venus05:15 – 06:23
- 2☿︎ Mercury06:23 – 07:31
- 3☽︎ Moon07:31 – 08:39
- 4♄︎ Saturn08:39 – 09:46
- 5♃︎ Jupiter09:46 – 10:54
- 6♂︎ Mars10:54 – 12:02
- 7☉︎ Sun12:02 – 13:10
- 8♀︎ Venus13:10 – 14:18
- 9☿︎ Mercury14:18 – 15:26
- 10☽︎ Moon15:26 – 16:34
- 11♄︎ Saturn16:34 – 17:42
- 12♃︎ Jupiter17:42 – 18:50
Night
- 1♂︎ Mars18:50 – 19:42
- 2☉︎ Sun19:42 – 20:34
- 3♀︎ Venus20:34 – 21:26
- 4☿︎ Mercury21:26 – 22:18
- 5☽︎ Moon22:18 – 23:10
- 6♄︎ Saturn23:10 – 00:02
- 7♃︎ Jupiter00:02 – 00:55
- 8♂︎ Mars00:55 – 01:47
- 9☉︎ Sun01:47 – 02:39
- 10♀︎ Venus02:39 – 03:31
- 11☿︎ Mercury03:31 – 04:23
- 12☽︎ Moon04:23 – 05:15
Other cities · Brazil
Questions
How are the planetary hours calculated in Guarulhos?
On Friday, 18 December 2026, the Sun rises at 05:15 and sets at 18:50: the day lasts 13h 35m, that is twelve day hours of 1h 08m. The night, until the next sunrise at 05:15, lasts 10h 26m: twelve night hours of 52 min.
Which planet rules the first hour that day?
Venus, from 05:15 to 06:23: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.