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 Tuesday, 23 December 2025: day of Mars
- Sunrise
- 07:40
- Sunset
- 15:12
- Next sunrise
- 07:40
A day hour lasts 38 min; a night hour, 1h 22m. Local time (Europe/Warsaw).
Day
- 1♂︎ Mars07:40 – 08:17
- 2☉︎ Sun08:17 – 08:55
- 3♀︎ Venus08:55 – 09:33
- 4☿︎ Mercury09:33 – 10:11
- 5☽︎ Moon10:11 – 10:48
- 6♄︎ Saturn10:48 – 11:26
- 7♃︎ Jupiter11:26 – 12:04
- 8♂︎ Mars12:04 – 12:41
- 9☉︎ Sun12:41 – 13:19
- 10♀︎ Venus13:19 – 13:57
- 11☿︎ Mercury13:57 – 14:35
- 12☽︎ Moon14:35 – 15:12
Night
- 1♄︎ Saturn15:12 – 16:35
- 2♃︎ Jupiter16:35 – 17:57
- 3♂︎ Mars17:57 – 19:19
- 4☉︎ Sun19:19 – 20:42
- 5♀︎ Venus20:42 – 22:04
- 6☿︎ Mercury22:04 – 23:26
- 7☽︎ Moon23:26 – 00:49
- 8♄︎ Saturn00:49 – 02:11
- 9♃︎ Jupiter02:11 – 03:33
- 10♂︎ Mars03:33 – 04:55
- 11☉︎ Sun04:55 – 06:18
- 12♀︎ Venus06:18 – 07:40
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Tuesday, 23 December 2025, the Sun rises at 07:40 and sets at 15:12: the day lasts 7h 33m, that is twelve day hours of 38 min. The night, until the next sunrise at 07:40, lasts 16h 28m: twelve night hours of 1h 22m.
Which planet rules the first hour that day?
Mars, from 07:40 to 08:17: 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.