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 Tuesday, 23 December 2025: day of Mars
- Sunrise
- 07:42
- Sunset
- 16:12
- Next sunrise
- 07:42
A day hour lasts 43 min; a night hour, 1h 18m. Local time (Europe/Vienna).
Day
- 1♂︎ Mars07:42 – 08:24
- 2☉︎ Sun08:24 – 09:07
- 3♀︎ Venus09:07 – 09:49
- 4☿︎ Mercury09:49 – 10:32
- 5☽︎ Moon10:32 – 11:14
- 6♄︎ Saturn11:14 – 11:57
- 7♃︎ Jupiter11:57 – 12:39
- 8♂︎ Mars12:39 – 13:22
- 9☉︎ Sun13:22 – 14:04
- 10♀︎ Venus14:04 – 14:47
- 11☿︎ Mercury14:47 – 15:29
- 12☽︎ Moon15:29 – 16:12
Night
- 1♄︎ Saturn16:12 – 17:29
- 2♃︎ Jupiter17:29 – 18:47
- 3♂︎ Mars18:47 – 20:05
- 4☉︎ Sun20:05 – 21:22
- 5♀︎ Venus21:22 – 22:40
- 6☿︎ Mercury22:40 – 23:57
- 7☽︎ Moon23:57 – 01:15
- 8♄︎ Saturn01:15 – 02:32
- 9♃︎ Jupiter02:32 – 03:50
- 10♂︎ Mars03:50 – 05:07
- 11☉︎ Sun05:07 – 06:25
- 12♀︎ Venus06:25 – 07:42
Other cities · Austria
Questions
How are the planetary hours calculated in Graz?
On Tuesday, 23 December 2025, the Sun rises at 07:42 and sets at 16:12: the day lasts 8h 30m, that is twelve day hours of 43 min. The night, until the next sunrise at 07:42, lasts 15h 30m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Mars, from 07:42 to 08:24: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.