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, 30 December 2025: day of Mars
- Sunrise
- 07:41
- Sunset
- 15:18
- Next sunrise
- 07:41
A day hour lasts 38 min; a night hour, 1h 22m. Local time (Europe/Warsaw).
Day
- 1♂︎ Mars07:41 – 08:19
- 2☉︎ Sun08:19 – 08:57
- 3♀︎ Venus08:57 – 09:35
- 4☿︎ Mercury09:35 – 10:13
- 5☽︎ Moon10:13 – 10:51
- 6♄︎ Saturn10:51 – 11:30
- 7♃︎ Jupiter11:30 – 12:08
- 8♂︎ Mars12:08 – 12:46
- 9☉︎ Sun12:46 – 13:24
- 10♀︎ Venus13:24 – 14:02
- 11☿︎ Mercury14:02 – 14:40
- 12☽︎ Moon14:40 – 15:18
Night
- 1♄︎ Saturn15:18 – 16:40
- 2♃︎ Jupiter16:40 – 18:02
- 3♂︎ Mars18:02 – 19:24
- 4☉︎ Sun19:24 – 20:46
- 5♀︎ Venus20:46 – 22:08
- 6☿︎ Mercury22:08 – 23:30
- 7☽︎ Moon23:30 – 00:51
- 8♄︎ Saturn00:51 – 02:13
- 9♃︎ Jupiter02:13 – 03:35
- 10♂︎ Mars03:35 – 04:57
- 11☉︎ Sun04:57 – 06:19
- 12♀︎ Venus06:19 – 07:41
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Tuesday, 30 December 2025, the Sun rises at 07:41 and sets at 15:18: the day lasts 7h 37m, that is twelve day hours of 38 min. The night, until the next sunrise at 07:41, lasts 16h 23m: twelve night hours of 1h 22m.
Which planet rules the first hour that day?
Mars, from 07:41 to 08:19: 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.