Planetary hours
in Białystok.
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, 25 December 2025: day of Jupiter
- Sunrise
- 07:40
- Sunset
- 15:14
- Next sunrise
- 07:41
A day hour lasts 38 min; a night hour, 1h 22m. Local time (Europe/Warsaw).
Day
- 1♃︎ Jupiter07:40 – 08:18
- 2♂︎ Mars08:18 – 08:56
- 3☉︎ Sun08:56 – 09:34
- 4♀︎ Venus09:34 – 10:11
- 5☿︎ Mercury10:11 – 10:49
- 6☽︎ Moon10:49 – 11:27
- 7♄︎ Saturn11:27 – 12:05
- 8♃︎ Jupiter12:05 – 12:43
- 9♂︎ Mars12:43 – 13:20
- 10☉︎ Sun13:20 – 13:58
- 11♀︎ Venus13:58 – 14:36
- 12☿︎ Mercury14:36 – 15:14
Night
- 1☽︎ Moon15:14 – 16:36
- 2♄︎ Saturn16:36 – 17:58
- 3♃︎ Jupiter17:58 – 19:20
- 4♂︎ Mars19:20 – 20:43
- 5☉︎ Sun20:43 – 22:05
- 6♀︎ Venus22:05 – 23:27
- 7☿︎ Mercury23:27 – 00:49
- 8☽︎ Moon00:49 – 02:12
- 9♄︎ Saturn02:12 – 03:34
- 10♃︎ Jupiter03:34 – 04:56
- 11♂︎ Mars04:56 – 06:18
- 12☉︎ Sun06:18 – 07:41
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Thursday, 25 December 2025, the Sun rises at 07:40 and sets at 15:14: the day lasts 7h 33m, that is twelve day hours of 38 min. The night, until the next sunrise at 07:41, lasts 16h 27m: twelve night hours of 1h 22m.
Which planet rules the first hour that day?
Jupiter, from 07:40 to 08:18: 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.