Planetary hours
in Saint Petersburg.
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 Saturday, 13 December 2025: day of Saturn
- Sunrise
- 09:53
- Sunset
- 15:52
- Next sunrise
- 09:54
A day hour lasts 30 min; a night hour, 1h 30m. Local time (Europe/Moscow).
Day
- 1♄︎ Saturn09:53 – 10:23
- 2♃︎ Jupiter10:23 – 10:53
- 3♂︎ Mars10:53 – 11:23
- 4☉︎ Sun11:23 – 11:52
- 5♀︎ Venus11:52 – 12:22
- 6☿︎ Mercury12:22 – 12:52
- 7☽︎ Moon12:52 – 13:22
- 8♄︎ Saturn13:22 – 13:52
- 9♃︎ Jupiter13:52 – 14:22
- 10♂︎ Mars14:22 – 14:52
- 11☉︎ Sun14:52 – 15:22
- 12♀︎ Venus15:22 – 15:52
Night
- 1☿︎ Mercury15:52 – 17:22
- 2☽︎ Moon17:22 – 18:52
- 3♄︎ Saturn18:52 – 20:23
- 4♃︎ Jupiter20:23 – 21:53
- 5♂︎ Mars21:53 – 23:23
- 6☉︎ Sun23:23 – 00:53
- 7♀︎ Venus00:53 – 02:23
- 8☿︎ Mercury02:23 – 03:53
- 9☽︎ Moon03:53 – 05:23
- 10♄︎ Saturn05:23 – 06:54
- 11♃︎ Jupiter06:54 – 08:24
- 12♂︎ Mars08:24 – 09:54
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Questions
How are the planetary hours calculated in Saint Petersburg?
On Saturday, 13 December 2025, the Sun rises at 09:53 and sets at 15:52: the day lasts 6h 00m, that is twelve day hours of 30 min. The night, until the next sunrise at 09:54, lasts 18h 02m: twelve night hours of 1h 30m.
Which planet rules the first hour that day?
Saturn, from 09:53 to 10:23: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.