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 Thursday, 21 May 2026: day of Jupiter
- Sunrise
- 04:19
- Sunset
- 20:29
- Next sunrise
- 04:18
A day hour lasts 1h 21m; a night hour, 39 min. Local time (Europe/Warsaw).
Day
- 1♃︎ Jupiter04:19 – 05:40
- 2♂︎ Mars05:40 – 07:01
- 3☉︎ Sun07:01 – 08:22
- 4♀︎ Venus08:22 – 09:42
- 5☿︎ Mercury09:42 – 11:03
- 6☽︎ Moon11:03 – 12:24
- 7♄︎ Saturn12:24 – 13:45
- 8♃︎ Jupiter13:45 – 15:05
- 9♂︎ Mars15:05 – 16:26
- 10☉︎ Sun16:26 – 17:47
- 11♀︎ Venus17:47 – 19:08
- 12☿︎ Mercury19:08 – 20:29
Night
- 1☽︎ Moon20:29 – 21:08
- 2♄︎ Saturn21:08 – 21:47
- 3♃︎ Jupiter21:47 – 22:26
- 4♂︎ Mars22:26 – 23:05
- 5☉︎ Sun23:05 – 23:44
- 6♀︎ Venus23:44 – 00:23
- 7☿︎ Mercury00:23 – 01:02
- 8☽︎ Moon01:02 – 01:42
- 9♄︎ Saturn01:42 – 02:21
- 10♃︎ Jupiter02:21 – 03:00
- 11♂︎ Mars03:00 – 03:39
- 12☉︎ Sun03:39 – 04:18
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Thursday, 21 May 2026, the Sun rises at 04:19 and sets at 20:29: the day lasts 16h 09m, that is twelve day hours of 1h 21m. The night, until the next sunrise at 04:18, lasts 7h 49m: twelve night hours of 39 min.
Which planet rules the first hour that day?
Jupiter, from 04:19 to 05:40: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.