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, 20 April 2026: day of the Moon
- Sunrise
- 05:17
- Sunset
- 19:36
- Next sunrise
- 05:15
A day hour lasts 1h 12m; a night hour, 48 min. Local time (Europe/Warsaw).
Day
- 1☽︎ Moon05:17 – 06:29
- 2♄︎ Saturn06:29 – 07:40
- 3♃︎ Jupiter07:40 – 08:52
- 4♂︎ Mars08:52 – 10:03
- 5☉︎ Sun10:03 – 11:15
- 6♀︎ Venus11:15 – 12:26
- 7☿︎ Mercury12:26 – 13:38
- 8☽︎ Moon13:38 – 14:50
- 9♄︎ Saturn14:50 – 16:01
- 10♃︎ Jupiter16:01 – 17:13
- 11♂︎ Mars17:13 – 18:24
- 12☉︎ Sun18:24 – 19:36
Night
- 1♀︎ Venus19:36 – 20:24
- 2☿︎ Mercury20:24 – 21:12
- 3☽︎ Moon21:12 – 22:01
- 4♄︎ Saturn22:01 – 22:49
- 5♃︎ Jupiter22:49 – 23:37
- 6♂︎ Mars23:37 – 00:25
- 7☉︎ Sun00:25 – 01:14
- 8♀︎ Venus01:14 – 02:02
- 9☿︎ Mercury02:02 – 02:50
- 10☽︎ Moon02:50 – 03:38
- 11♄︎ Saturn03:38 – 04:27
- 12♃︎ Jupiter04:27 – 05:15
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Monday, 20 April 2026, the Sun rises at 05:17 and sets at 19:36: the day lasts 14h 19m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 05:15, lasts 9h 39m: twelve night hours of 48 min.
Which planet rules the first hour that day?
The Moon, from 05:17 to 06:29: 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.