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, 10 September 2025: day of Mercury
- Sunrise
- 06:29
- Sunset
- 19:20
- Next sunrise
- 06:30
A day hour lasts 1h 04m; a night hour, 56 min. Local time (Europe/Vienna).
Day
- 1☿︎ Mercury06:29 – 07:33
- 2☽︎ Moon07:33 – 08:37
- 3♄︎ Saturn08:37 – 09:42
- 4♃︎ Jupiter09:42 – 10:46
- 5♂︎ Mars10:46 – 11:50
- 6☉︎ Sun11:50 – 12:54
- 7♀︎ Venus12:54 – 13:58
- 8☿︎ Mercury13:58 – 15:03
- 9☽︎ Moon15:03 – 16:07
- 10♄︎ Saturn16:07 – 17:11
- 11♃︎ Jupiter17:11 – 18:15
- 12♂︎ Mars18:15 – 19:20
Night
- 1☉︎ Sun19:20 – 20:15
- 2♀︎ Venus20:15 – 21:11
- 3☿︎ Mercury21:11 – 22:07
- 4☽︎ Moon22:07 – 23:03
- 5♄︎ Saturn23:03 – 23:59
- 6♃︎ Jupiter23:59 – 00:55
- 7♂︎ Mars00:55 – 01:51
- 8☉︎ Sun01:51 – 02:47
- 9♀︎ Venus02:47 – 03:43
- 10☿︎ Mercury03:43 – 04:38
- 11☽︎ Moon04:38 – 05:34
- 12♄︎ Saturn05:34 – 06:30
Other cities · Austria
Questions
How are the planetary hours calculated in Graz?
On Wednesday, 10 September 2025, the Sun rises at 06:29 and sets at 19:20: the day lasts 12h 51m, that is twelve day hours of 1h 04m. The night, until the next sunrise at 06:30, lasts 11h 11m: twelve night hours of 56 min.
Which planet rules the first hour that day?
Mercury, from 06:29 to 07:33: 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.