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 Thursday, 4 December 2025: day of Jupiter
- Sunrise
- 09:39
- Sunset
- 15:58
- Next sunrise
- 09:40
A day hour lasts 32 min; a night hour, 1h 29m. Local time (Europe/Moscow).
Day
- 1♃︎ Jupiter09:39 – 10:10
- 2♂︎ Mars10:10 – 10:42
- 3☉︎ Sun10:42 – 11:13
- 4♀︎ Venus11:13 – 11:45
- 5☿︎ Mercury11:45 – 12:17
- 6☽︎ Moon12:17 – 12:48
- 7♄︎ Saturn12:48 – 13:20
- 8♃︎ Jupiter13:20 – 13:52
- 9♂︎ Mars13:52 – 14:23
- 10☉︎ Sun14:23 – 14:55
- 11♀︎ Venus14:55 – 15:26
- 12☿︎ Mercury15:26 – 15:58
Night
- 1☽︎ Moon15:58 – 17:27
- 2♄︎ Saturn17:27 – 18:55
- 3♃︎ Jupiter18:55 – 20:24
- 4♂︎ Mars20:24 – 21:52
- 5☉︎ Sun21:52 – 23:21
- 6♀︎ Venus23:21 – 00:49
- 7☿︎ Mercury00:49 – 02:18
- 8☽︎ Moon02:18 – 03:46
- 9♄︎ Saturn03:46 – 05:15
- 10♃︎ Jupiter05:15 – 06:43
- 11♂︎ Mars06:43 – 08:12
- 12☉︎ Sun08:12 – 09:40
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Questions
How are the planetary hours calculated in Saint Petersburg?
On Thursday, 4 December 2025, the Sun rises at 09:39 and sets at 15:58: the day lasts 6h 19m, that is twelve day hours of 32 min. The night, until the next sunrise at 09:40, lasts 17h 43m: twelve night hours of 1h 29m.
Which planet rules the first hour that day?
Jupiter, from 09:39 to 10:10: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.