Planetary hours
in Bilbao.
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, 20 December 2025: day of Saturn
- Sunrise
- 08:40
- Sunset
- 17:38
- Next sunrise
- 08:40
A day hour lasts 45 min; a night hour, 1h 15m. Local time (Europe/Madrid).
Day
- 1♄︎ Saturn08:40 – 09:25
- 2♃︎ Jupiter09:25 – 10:09
- 3♂︎ Mars10:09 – 10:54
- 4☉︎ Sun10:54 – 11:39
- 5♀︎ Venus11:39 – 12:24
- 6☿︎ Mercury12:24 – 13:09
- 7☽︎ Moon13:09 – 13:54
- 8♄︎ Saturn13:54 – 14:39
- 9♃︎ Jupiter14:39 – 15:24
- 10♂︎ Mars15:24 – 16:08
- 11☉︎ Sun16:08 – 16:53
- 12♀︎ Venus16:53 – 17:38
Night
- 1☿︎ Mercury17:38 – 18:53
- 2☽︎ Moon18:53 – 20:08
- 3♄︎ Saturn20:08 – 21:24
- 4♃︎ Jupiter21:24 – 22:39
- 5♂︎ Mars22:39 – 23:54
- 6☉︎ Sun23:54 – 01:09
- 7♀︎ Venus01:09 – 02:24
- 8☿︎ Mercury02:24 – 03:40
- 9☽︎ Moon03:40 – 04:55
- 10♄︎ Saturn04:55 – 06:10
- 11♃︎ Jupiter06:10 – 07:25
- 12♂︎ Mars07:25 – 08:40
Other cities · Spain
Questions
How are the planetary hours calculated in Bilbao?
On Saturday, 20 December 2025, the Sun rises at 08:40 and sets at 17:38: the day lasts 8h 59m, that is twelve day hours of 45 min. The night, until the next sunrise at 08:40, lasts 15h 02m: twelve night hours of 1h 15m.
Which planet rules the first hour that day?
Saturn, from 08:40 to 09:25: 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.