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 Friday, 12 September 2025: day of Venus
- Sunrise
- 06:31
- Sunset
- 19:16
- Next sunrise
- 06:33
A day hour lasts 1h 04m; a night hour, 56 min. Local time (Europe/Vienna).
Day
- 1♀︎ Venus06:31 – 07:35
- 2☿︎ Mercury07:35 – 08:39
- 3☽︎ Moon08:39 – 09:42
- 4♄︎ Saturn09:42 – 10:46
- 5♃︎ Jupiter10:46 – 11:50
- 6♂︎ Mars11:50 – 12:53
- 7☉︎ Sun12:53 – 13:57
- 8♀︎ Venus13:57 – 15:01
- 9☿︎ Mercury15:01 – 16:05
- 10☽︎ Moon16:05 – 17:08
- 11♄︎ Saturn17:08 – 18:12
- 12♃︎ Jupiter18:12 – 19:16
Night
- 1♂︎ Mars19:16 – 20:12
- 2☉︎ Sun20:12 – 21:08
- 3♀︎ Venus21:08 – 22:05
- 4☿︎ Mercury22:05 – 23:01
- 5☽︎ Moon23:01 – 23:58
- 6♄︎ Saturn23:58 – 00:54
- 7♃︎ Jupiter00:54 – 01:51
- 8♂︎ Mars01:51 – 02:47
- 9☉︎ Sun02:47 – 03:43
- 10♀︎ Venus03:43 – 04:40
- 11☿︎ Mercury04:40 – 05:36
- 12☽︎ Moon05:36 – 06:33
Other cities · Austria
Questions
How are the planetary hours calculated in Graz?
On Friday, 12 September 2025, the Sun rises at 06:31 and sets at 19:16: the day lasts 12h 44m, that is twelve day hours of 1h 04m. The night, until the next sunrise at 06:33, lasts 11h 17m: twelve night hours of 56 min.
Which planet rules the first hour that day?
Venus, from 06:31 to 07:35: 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.