Planetary hours
in Bydgoszcz.
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
- 07:53
- Sunset
- 15:30
- Next sunrise
- 07:54
A day hour lasts 38 min; a night hour, 1h 22m. Local time (Europe/Warsaw).
Day
- 1♄︎ Saturn07:53 – 08:31
- 2♃︎ Jupiter08:31 – 09:10
- 3♂︎ Mars09:10 – 09:48
- 4☉︎ Sun09:48 – 10:26
- 5♀︎ Venus10:26 – 11:04
- 6☿︎ Mercury11:04 – 11:42
- 7☽︎ Moon11:42 – 12:20
- 8♄︎ Saturn12:20 – 12:58
- 9♃︎ Jupiter12:58 – 13:36
- 10♂︎ Mars13:36 – 14:14
- 11☉︎ Sun14:14 – 14:52
- 12♀︎ Venus14:52 – 15:30
Night
- 1☿︎ Mercury15:30 – 16:52
- 2☽︎ Moon16:52 – 18:14
- 3♄︎ Saturn18:14 – 19:36
- 4♃︎ Jupiter19:36 – 20:58
- 5♂︎ Mars20:58 – 22:20
- 6☉︎ Sun22:20 – 23:42
- 7♀︎ Venus23:42 – 01:04
- 8☿︎ Mercury01:04 – 02:26
- 9☽︎ Moon02:26 – 03:48
- 10♄︎ Saturn03:48 – 05:10
- 11♃︎ Jupiter05:10 – 06:32
- 12♂︎ Mars06:32 – 07:54
Other cities · Poland
Questions
How are the planetary hours calculated in Bydgoszcz?
On Saturday, 13 December 2025, the Sun rises at 07:53 and sets at 15:30: the day lasts 7h 36m, that is twelve day hours of 38 min. The night, until the next sunrise at 07:54, lasts 16h 25m: twelve night hours of 1h 22m.
Which planet rules the first hour that day?
Saturn, from 07:53 to 08:31: 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.