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 Monday, 17 August 2026: day of the Moon
- Sunrise
- 05:11
- Sunset
- 19:50
- Next sunrise
- 05:12
A day hour lasts 1h 13m; a night hour, 47 min. Local time (Europe/Warsaw).
Day
- 1☽︎ Moon05:11 – 06:24
- 2♄︎ Saturn06:24 – 07:37
- 3♃︎ Jupiter07:37 – 08:51
- 4♂︎ Mars08:51 – 10:04
- 5☉︎ Sun10:04 – 11:17
- 6♀︎ Venus11:17 – 12:30
- 7☿︎ Mercury12:30 – 13:44
- 8☽︎ Moon13:44 – 14:57
- 9♄︎ Saturn14:57 – 16:10
- 10♃︎ Jupiter16:10 – 17:23
- 11♂︎ Mars17:23 – 18:37
- 12☉︎ Sun18:37 – 19:50
Night
- 1♀︎ Venus19:50 – 20:37
- 2☿︎ Mercury20:37 – 21:24
- 3☽︎ Moon21:24 – 22:11
- 4♄︎ Saturn22:11 – 22:57
- 5♃︎ Jupiter22:57 – 23:44
- 6♂︎ Mars23:44 – 00:31
- 7☉︎ Sun00:31 – 01:18
- 8♀︎ Venus01:18 – 02:05
- 9☿︎ Mercury02:05 – 02:52
- 10☽︎ Moon02:52 – 03:39
- 11♄︎ Saturn03:39 – 04:26
- 12♃︎ Jupiter04:26 – 05:12
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Monday, 17 August 2026, the Sun rises at 05:11 and sets at 19:50: the day lasts 14h 39m, that is twelve day hours of 1h 13m. The night, until the next sunrise at 05:12, lasts 9h 22m: twelve night hours of 47 min.
Which planet rules the first hour that day?
The Moon, from 05:11 to 06:24: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.