Planetary hours
in Riberalta.
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
- 05:57
- Sunset
- 18:44
- Next sunrise
- 05:58
A day hour lasts 1h 04m; a night hour, 56 min. Local time (America/La_Paz).
Day
- 1♀︎ Venus05:57 – 07:01
- 2☿︎ Mercury07:01 – 08:05
- 3☽︎ Moon08:05 – 09:09
- 4♄︎ Saturn09:09 – 10:13
- 5♃︎ Jupiter10:13 – 11:17
- 6♂︎ Mars11:17 – 12:20
- 7☉︎ Sun12:20 – 13:24
- 8♀︎ Venus13:24 – 14:28
- 9☿︎ Mercury14:28 – 15:32
- 10☽︎ Moon15:32 – 16:36
- 11♄︎ Saturn16:36 – 17:40
- 12♃︎ Jupiter17:40 – 18:44
Night
- 1♂︎ Mars18:44 – 19:40
- 2☉︎ Sun19:40 – 20:36
- 3♀︎ Venus20:36 – 21:32
- 4☿︎ Mercury21:32 – 22:28
- 5☽︎ Moon22:28 – 23:24
- 6♄︎ Saturn23:24 – 00:21
- 7♃︎ Jupiter00:21 – 01:17
- 8♂︎ Mars01:17 – 02:13
- 9☉︎ Sun02:13 – 03:09
- 10♀︎ Venus03:09 – 04:05
- 11☿︎ Mercury04:05 – 05:02
- 12☽︎ Moon05:02 – 05:58
Other cities · Bolivia
Questions
How are the planetary hours calculated in Riberalta?
On Friday, 18 December 2026, the Sun rises at 05:57 and sets at 18:44: the day lasts 12h 46m, that is twelve day hours of 1h 04m. The night, until the next sunrise at 05:58, lasts 11h 14m: twelve night hours of 56 min.
Which planet rules the first hour that day?
Venus, from 05:57 to 07:01: 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.