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 Monday, 15 December 2025: day of the Moon
- Sunrise
- 07:37
- Sunset
- 16:09
- Next sunrise
- 07:38
A day hour lasts 43 min; a night hour, 1h 17m. Local time (Europe/Vienna).
Day
- 1☽︎ Moon07:37 – 08:20
- 2♄︎ Saturn08:20 – 09:02
- 3♃︎ Jupiter09:02 – 09:45
- 4♂︎ Mars09:45 – 10:28
- 5☉︎ Sun10:28 – 11:10
- 6♀︎ Venus11:10 – 11:53
- 7☿︎ Mercury11:53 – 12:36
- 8☽︎ Moon12:36 – 13:18
- 9♄︎ Saturn13:18 – 14:01
- 10♃︎ Jupiter14:01 – 14:43
- 11♂︎ Mars14:43 – 15:26
- 12☉︎ Sun15:26 – 16:09
Night
- 1♀︎ Venus16:09 – 17:26
- 2☿︎ Mercury17:26 – 18:44
- 3☽︎ Moon18:44 – 20:01
- 4♄︎ Saturn20:01 – 21:18
- 5♃︎ Jupiter21:18 – 22:36
- 6♂︎ Mars22:36 – 23:53
- 7☉︎ Sun23:53 – 01:11
- 8♀︎ Venus01:11 – 02:28
- 9☿︎ Mercury02:28 – 03:46
- 10☽︎ Moon03:46 – 05:03
- 11♄︎ Saturn05:03 – 06:20
- 12♃︎ Jupiter06:20 – 07:38
Other cities · Austria
Questions
How are the planetary hours calculated in Graz?
On Monday, 15 December 2025, the Sun rises at 07:37 and sets at 16:09: the day lasts 8h 32m, that is twelve day hours of 43 min. The night, until the next sunrise at 07:38, lasts 15h 29m: twelve night hours of 1h 17m.
Which planet rules the first hour that day?
The Moon, from 07:37 to 08:20: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.