Planetary hours
in Graz.
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 Wednesday, 24 December 2025: day of Mercury
- Sunrise
- 07:42
- Sunset
- 16:13
- Next sunrise
- 07:43
A day hour lasts 43 min; a night hour, 1h 18m. Local time (Europe/Vienna).
Day
- 1☿︎ Mercury07:42 – 08:25
- 2☽︎ Moon08:25 – 09:07
- 3♄︎ Saturn09:07 – 09:50
- 4♃︎ Jupiter09:50 – 10:32
- 5♂︎ Mars10:32 – 11:15
- 6☉︎ Sun11:15 – 11:57
- 7♀︎ Venus11:57 – 12:40
- 8☿︎ Mercury12:40 – 13:22
- 9☽︎ Moon13:22 – 14:05
- 10♄︎ Saturn14:05 – 14:48
- 11♃︎ Jupiter14:48 – 15:30
- 12♂︎ Mars15:30 – 16:13
Night
- 1☉︎ Sun16:13 – 17:30
- 2♀︎ Venus17:30 – 18:48
- 3☿︎ Mercury18:48 – 20:05
- 4☽︎ Moon20:05 – 21:23
- 5♄︎ Saturn21:23 – 22:40
- 6♃︎ Jupiter22:40 – 23:58
- 7♂︎ Mars23:58 – 01:15
- 8☉︎ Sun01:15 – 02:33
- 9♀︎ Venus02:33 – 03:50
- 10☿︎ Mercury03:50 – 05:08
- 11☽︎ Moon05:08 – 06:25
- 12♄︎ Saturn06:25 – 07:43
Other cities · Austria
Questions
How are the planetary hours calculated in Graz?
On Wednesday, 24 December 2025, the Sun rises at 07:42 and sets at 16:13: the day lasts 8h 30m, that is twelve day hours of 43 min. The night, until the next sunrise at 07:43, lasts 15h 30m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Mercury, from 07:42 to 08:25: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.