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 Tuesday, 23 December 2025: day of Mars
- Sunrise
- 10:01
- Sunset
- 15:54
- Next sunrise
- 10:01
A day hour lasts 29 min; a night hour, 1h 31m. Local time (Europe/Moscow).
Day
- 1♂︎ Mars10:01 – 10:30
- 2☉︎ Sun10:30 – 11:00
- 3♀︎ Venus11:00 – 11:29
- 4☿︎ Mercury11:29 – 11:58
- 5☽︎ Moon11:58 – 12:28
- 6♄︎ Saturn12:28 – 12:57
- 7♃︎ Jupiter12:57 – 13:27
- 8♂︎ Mars13:27 – 13:56
- 9☉︎ Sun13:56 – 14:26
- 10♀︎ Venus14:26 – 14:55
- 11☿︎ Mercury14:55 – 15:25
- 12☽︎ Moon15:25 – 15:54
Night
- 1♄︎ Saturn15:54 – 17:25
- 2♃︎ Jupiter17:25 – 18:55
- 3♂︎ Mars18:55 – 20:26
- 4☉︎ Sun20:26 – 21:56
- 5♀︎ Venus21:56 – 23:27
- 6☿︎ Mercury23:27 – 00:58
- 7☽︎ Moon00:58 – 02:28
- 8♄︎ Saturn02:28 – 03:59
- 9♃︎ Jupiter03:59 – 05:29
- 10♂︎ Mars05:29 – 07:00
- 11☉︎ Sun07:00 – 08:30
- 12♀︎ Venus08:30 – 10:01
Other cities · Russia
Questions
How are the planetary hours calculated in Saint Petersburg?
On Tuesday, 23 December 2025, the Sun rises at 10:01 and sets at 15:54: the day lasts 5h 54m, that is twelve day hours of 29 min. The night, until the next sunrise at 10:01, lasts 18h 07m: twelve night hours of 1h 31m.
Which planet rules the first hour that day?
Mars, from 10:01 to 10:30: 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.