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 Sunday, 20 December 2026: day of the Sun
- Sunrise
- 07:41
- Sunset
- 16:01
- Next sunrise
- 07:42
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Vienna).
Day
- 1☉︎ Sun07:41 – 08:23
- 2♀︎ Venus08:23 – 09:04
- 3☿︎ Mercury09:04 – 09:46
- 4☽︎ Moon09:46 – 10:28
- 5♄︎ Saturn10:28 – 11:09
- 6♃︎ Jupiter11:09 – 11:51
- 7♂︎ Mars11:51 – 12:33
- 8☉︎ Sun12:33 – 13:15
- 9♀︎ Venus13:15 – 13:56
- 10☿︎ Mercury13:56 – 14:38
- 11☽︎ Moon14:38 – 15:20
- 12♄︎ Saturn15:20 – 16:01
Night
- 1♃︎ Jupiter16:01 – 17:20
- 2♂︎ Mars17:20 – 18:38
- 3☉︎ Sun18:38 – 19:56
- 4♀︎ Venus19:56 – 21:15
- 5☿︎ Mercury21:15 – 22:33
- 6☽︎ Moon22:33 – 23:51
- 7♄︎ Saturn23:51 – 01:10
- 8♃︎ Jupiter01:10 – 02:28
- 9♂︎ Mars02:28 – 03:47
- 10☉︎ Sun03:47 – 05:05
- 11♀︎ Venus05:05 – 06:23
- 12☿︎ Mercury06:23 – 07:42
Other cities · Austria
Questions
How are the planetary hours calculated in Donaustadt?
On Sunday, 20 December 2026, the Sun rises at 07:41 and sets at 16:01: the day lasts 8h 20m, that is twelve day hours of 42 min. The night, until the next sunrise at 07:42, lasts 15h 40m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
The Sun, from 07:41 to 08:23: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.