Planetary hours
in Linz.
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, 12 December 2025: day of Venus
- Sunrise
- 07:44
- Sunset
- 16:08
- Next sunrise
- 07:45
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Vienna).
Day
- 1♀︎ Venus07:44 – 08:26
- 2☿︎ Mercury08:26 – 09:08
- 3☽︎ Moon09:08 – 09:50
- 4♄︎ Saturn09:50 – 10:32
- 5♃︎ Jupiter10:32 – 11:14
- 6♂︎ Mars11:14 – 11:56
- 7☉︎ Sun11:56 – 12:38
- 8♀︎ Venus12:38 – 13:20
- 9☿︎ Mercury13:20 – 14:02
- 10☽︎ Moon14:02 – 14:44
- 11♄︎ Saturn14:44 – 15:26
- 12♃︎ Jupiter15:26 – 16:08
Night
- 1♂︎ Mars16:08 – 17:26
- 2☉︎ Sun17:26 – 18:44
- 3♀︎ Venus18:44 – 20:02
- 4☿︎ Mercury20:02 – 21:20
- 5☽︎ Moon21:20 – 22:38
- 6♄︎ Saturn22:38 – 23:56
- 7♃︎ Jupiter23:56 – 01:15
- 8♂︎ Mars01:15 – 02:33
- 9☉︎ Sun02:33 – 03:51
- 10♀︎ Venus03:51 – 05:09
- 11☿︎ Mercury05:09 – 06:27
- 12☽︎ Moon06:27 – 07:45
Other cities · Austria
Questions
How are the planetary hours calculated in Linz?
On Friday, 12 December 2025, the Sun rises at 07:44 and sets at 16:08: the day lasts 8h 23m, that is twelve day hours of 42 min. The night, until the next sunrise at 07:45, lasts 15h 37m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Venus, from 07:44 to 08:26: 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.