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 Wednesday, 21 October 2026: day of Mercury
- Sunrise
- 07:04
- Sunset
- 17:18
- Next sunrise
- 07:06
A day hour lasts 51 min; a night hour, 1h 09m. Local time (Europe/Warsaw).
Day
- 1☿︎ Mercury07:04 – 07:55
- 2☽︎ Moon07:55 – 08:46
- 3♄︎ Saturn08:46 – 09:38
- 4♃︎ Jupiter09:38 – 10:29
- 5♂︎ Mars10:29 – 11:20
- 6☉︎ Sun11:20 – 12:11
- 7♀︎ Venus12:11 – 13:02
- 8☿︎ Mercury13:02 – 13:53
- 9☽︎ Moon13:53 – 14:45
- 10♄︎ Saturn14:45 – 15:36
- 11♃︎ Jupiter15:36 – 16:27
- 12♂︎ Mars16:27 – 17:18
Night
- 1☉︎ Sun17:18 – 18:27
- 2♀︎ Venus18:27 – 19:36
- 3☿︎ Mercury19:36 – 20:45
- 4☽︎ Moon20:45 – 21:54
- 5♄︎ Saturn21:54 – 23:03
- 6♃︎ Jupiter23:03 – 00:12
- 7♂︎ Mars00:12 – 01:21
- 8☉︎ Sun01:21 – 02:30
- 9♀︎ Venus02:30 – 03:39
- 10☿︎ Mercury03:39 – 04:48
- 11☽︎ Moon04:48 – 05:57
- 12♄︎ Saturn05:57 – 07:06
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Wednesday, 21 October 2026, the Sun rises at 07:04 and sets at 17:18: the day lasts 10h 14m, that is twelve day hours of 51 min. The night, until the next sunrise at 07:06, lasts 13h 48m: twelve night hours of 1h 09m.
Which planet rules the first hour that day?
Mercury, from 07:04 to 07:55: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.