Planetary hours
in Donaustadt.
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, 21 August 2026: day of Venus
- Sunrise
- 05:56
- Sunset
- 19:57
- Next sunrise
- 05:57
A day hour lasts 1h 10m; a night hour, 50 min. Local time (Europe/Vienna).
Day
- 1♀︎ Venus05:56 – 07:06
- 2☿︎ Mercury07:06 – 08:16
- 3☽︎ Moon08:16 – 09:26
- 4♄︎ Saturn09:26 – 10:36
- 5♃︎ Jupiter10:36 – 11:46
- 6♂︎ Mars11:46 – 12:56
- 7☉︎ Sun12:56 – 14:06
- 8♀︎ Venus14:06 – 15:16
- 9☿︎ Mercury15:16 – 16:27
- 10☽︎ Moon16:27 – 17:37
- 11♄︎ Saturn17:37 – 18:47
- 12♃︎ Jupiter18:47 – 19:57
Night
- 1♂︎ Mars19:57 – 20:47
- 2☉︎ Sun20:47 – 21:37
- 3♀︎ Venus21:37 – 22:27
- 4☿︎ Mercury22:27 – 23:17
- 5☽︎ Moon23:17 – 00:07
- 6♄︎ Saturn00:07 – 00:57
- 7♃︎ Jupiter00:57 – 01:47
- 8♂︎ Mars01:47 – 02:37
- 9☉︎ Sun02:37 – 03:27
- 10♀︎ Venus03:27 – 04:17
- 11☿︎ Mercury04:17 – 05:07
- 12☽︎ Moon05:07 – 05:57
Other cities · Austria
Questions
How are the planetary hours calculated in Donaustadt?
On Friday, 21 August 2026, the Sun rises at 05:56 and sets at 19:57: the day lasts 14h 01m, that is twelve day hours of 1h 10m. The night, until the next sunrise at 05:57, lasts 10h 01m: twelve night hours of 50 min.
Which planet rules the first hour that day?
Venus, from 05:56 to 07:06: 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.