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 Saturday, 9 August 2025: day of Saturn
- Sunrise
- 04:57
- Sunset
- 20:06
- Next sunrise
- 04:59
A day hour lasts 1h 16m; a night hour, 44 min. Local time (Europe/Warsaw).
Day
- 1♄︎ Saturn04:57 – 06:13
- 2♃︎ Jupiter06:13 – 07:29
- 3♂︎ Mars07:29 – 08:45
- 4☉︎ Sun08:45 – 10:00
- 5♀︎ Venus10:00 – 11:16
- 6☿︎ Mercury11:16 – 12:32
- 7☽︎ Moon12:32 – 13:47
- 8♄︎ Saturn13:47 – 15:03
- 9♃︎ Jupiter15:03 – 16:19
- 10♂︎ Mars16:19 – 17:35
- 11☉︎ Sun17:35 – 18:50
- 12♀︎ Venus18:50 – 20:06
Night
- 1☿︎ Mercury20:06 – 20:51
- 2☽︎ Moon20:51 – 21:35
- 3♄︎ Saturn21:35 – 22:19
- 4♃︎ Jupiter22:19 – 23:04
- 5♂︎ Mars23:04 – 23:48
- 6☉︎ Sun23:48 – 00:33
- 7♀︎ Venus00:33 – 01:17
- 8☿︎ Mercury01:17 – 02:01
- 9☽︎ Moon02:01 – 02:46
- 10♄︎ Saturn02:46 – 03:30
- 11♃︎ Jupiter03:30 – 04:15
- 12♂︎ Mars04:15 – 04:59
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Saturday, 9 August 2025, the Sun rises at 04:57 and sets at 20:06: the day lasts 15h 09m, that is twelve day hours of 1h 16m. The night, until the next sunrise at 04:59, lasts 8h 53m: twelve night hours of 44 min.
Which planet rules the first hour that day?
Saturn, from 04:57 to 06:13: 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.