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 Wednesday, 16 December 2026: day of Mercury
- Sunrise
- 07:38
- Sunset
- 16:00
- Next sunrise
- 07:39
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Vienna).
Day
- 1☿︎ Mercury07:38 – 08:20
- 2☽︎ Moon08:20 – 09:02
- 3♄︎ Saturn09:02 – 09:44
- 4♃︎ Jupiter09:44 – 10:26
- 5♂︎ Mars10:26 – 11:07
- 6☉︎ Sun11:07 – 11:49
- 7♀︎ Venus11:49 – 12:31
- 8☿︎ Mercury12:31 – 13:13
- 9☽︎ Moon13:13 – 13:55
- 10♄︎ Saturn13:55 – 14:36
- 11♃︎ Jupiter14:36 – 15:18
- 12♂︎ Mars15:18 – 16:00
Night
- 1☉︎ Sun16:00 – 17:18
- 2♀︎ Venus17:18 – 18:37
- 3☿︎ Mercury18:37 – 19:55
- 4☽︎ Moon19:55 – 21:13
- 5♄︎ Saturn21:13 – 22:31
- 6♃︎ Jupiter22:31 – 23:50
- 7♂︎ Mars23:50 – 01:08
- 8☉︎ Sun01:08 – 02:26
- 9♀︎ Venus02:26 – 03:44
- 10☿︎ Mercury03:44 – 05:03
- 11☽︎ Moon05:03 – 06:21
- 12♄︎ Saturn06:21 – 07:39
Other cities · Austria
Questions
How are the planetary hours calculated in Donaustadt?
On Wednesday, 16 December 2026, the Sun rises at 07:38 and sets at 16:00: the day lasts 8h 22m, that is twelve day hours of 42 min. The night, until the next sunrise at 07:39, lasts 15h 39m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Mercury, from 07:38 to 08:20: 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.