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 Wednesday, 7 January 2026: day of Mercury
- Sunrise
- 07:39
- Sunset
- 15:28
- Next sunrise
- 07:38
A day hour lasts 39 min; a night hour, 1h 21m. Local time (Europe/Warsaw).
Day
- 1☿︎ Mercury07:39 – 08:18
- 2☽︎ Moon08:18 – 08:57
- 3♄︎ Saturn08:57 – 09:36
- 4♃︎ Jupiter09:36 – 10:15
- 5♂︎ Mars10:15 – 10:54
- 6☉︎ Sun10:54 – 11:33
- 7♀︎ Venus11:33 – 12:12
- 8☿︎ Mercury12:12 – 12:51
- 9☽︎ Moon12:51 – 13:30
- 10♄︎ Saturn13:30 – 14:09
- 11♃︎ Jupiter14:09 – 14:49
- 12♂︎ Mars14:49 – 15:28
Night
- 1☉︎ Sun15:28 – 16:48
- 2♀︎ Venus16:48 – 18:09
- 3☿︎ Mercury18:09 – 19:30
- 4☽︎ Moon19:30 – 20:51
- 5♄︎ Saturn20:51 – 22:12
- 6♃︎ Jupiter22:12 – 23:33
- 7♂︎ Mars23:33 – 00:54
- 8☉︎ Sun00:54 – 02:15
- 9♀︎ Venus02:15 – 03:36
- 10☿︎ Mercury03:36 – 04:57
- 11☽︎ Moon04:57 – 06:18
- 12♄︎ Saturn06:18 – 07:38
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Wednesday, 7 January 2026, the Sun rises at 07:39 and sets at 15:28: the day lasts 7h 49m, that is twelve day hours of 39 min. The night, until the next sunrise at 07:38, lasts 16h 11m: twelve night hours of 1h 21m.
Which planet rules the first hour that day?
Mercury, from 07:39 to 08:18: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.