Planetary hours
in Vienna.
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 Tuesday, 15 December 2026: day of Mars
- 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♂︎ Mars07:38 – 08:20
- 2☉︎ Sun08:20 – 09:02
- 3♀︎ Venus09:02 – 09:43
- 4☿︎ Mercury09:43 – 10:25
- 5☽︎ Moon10:25 – 11:07
- 6♄︎ Saturn11:07 – 11:49
- 7♃︎ Jupiter11:49 – 12:31
- 8♂︎ Mars12:31 – 13:13
- 9☉︎ Sun13:13 – 13:55
- 10♀︎ Venus13:55 – 14:37
- 11☿︎ Mercury14:37 – 15:18
- 12☽︎ Moon15:18 – 16:00
Night
- 1♄︎ Saturn16:00 – 17:18
- 2♃︎ Jupiter17:18 – 18:37
- 3♂︎ Mars18:37 – 19:55
- 4☉︎ Sun19:55 – 21:13
- 5♀︎ Venus21:13 – 22:31
- 6☿︎ Mercury22:31 – 23:49
- 7☽︎ Moon23:49 – 01:08
- 8♄︎ Saturn01:08 – 02:26
- 9♃︎ Jupiter02:26 – 03:44
- 10♂︎ Mars03:44 – 05:02
- 11☉︎ Sun05:02 – 06:20
- 12♀︎ Venus06:20 – 07:39
Other cities · Austria
Questions
How are the planetary hours calculated in Vienna?
On Tuesday, 15 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 38m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Mars, 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 Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.