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, 21 December 2026: day of the Moon
- Sunrise
- 07:39
- Sunset
- 15:11
- Next sunrise
- 07:39
A day hour lasts 38 min; a night hour, 1h 22m. Local time (Europe/Warsaw).
Day
- 1☽︎ Moon07:39 – 08:16
- 2♄︎ Saturn08:16 – 08:54
- 3♃︎ Jupiter08:54 – 09:32
- 4♂︎ Mars09:32 – 10:09
- 5☉︎ Sun10:09 – 10:47
- 6♀︎ Venus10:47 – 11:25
- 7☿︎ Mercury11:25 – 12:03
- 8☽︎ Moon12:03 – 12:40
- 9♄︎ Saturn12:40 – 13:18
- 10♃︎ Jupiter13:18 – 13:56
- 11♂︎ Mars13:56 – 14:33
- 12☉︎ Sun14:33 – 15:11
Night
- 1♀︎ Venus15:11 – 16:33
- 2☿︎ Mercury16:33 – 17:56
- 3☽︎ Moon17:56 – 19:18
- 4♄︎ Saturn19:18 – 20:40
- 5♃︎ Jupiter20:40 – 22:03
- 6♂︎ Mars22:03 – 23:25
- 7☉︎ Sun23:25 – 00:47
- 8♀︎ Venus00:47 – 02:10
- 9☿︎ Mercury02:10 – 03:32
- 10☽︎ Moon03:32 – 04:55
- 11♄︎ Saturn04:55 – 06:17
- 12♃︎ Jupiter06:17 – 07:39
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Monday, 21 December 2026, the Sun rises at 07:39 and sets at 15:11: the day lasts 7h 32m, that is twelve day hours of 38 min. The night, until the next sunrise at 07:39, lasts 16h 28m: twelve night hours of 1h 22m.
Which planet rules the first hour that day?
The Moon, from 07:39 to 08:16: 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.