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 Friday, 15 August 2025: day of Venus
- Sunrise
- 05:08
- Sunset
- 19:54
- Next sunrise
- 05:09
A day hour lasts 1h 14m; a night hour, 46 min. Local time (Europe/Warsaw).
Day
- 1♀︎ Venus05:08 – 06:22
- 2☿︎ Mercury06:22 – 07:35
- 3☽︎ Moon07:35 – 08:49
- 4♄︎ Saturn08:49 – 10:03
- 5♃︎ Jupiter10:03 – 11:17
- 6♂︎ Mars11:17 – 12:31
- 7☉︎ Sun12:31 – 13:45
- 8♀︎ Venus13:45 – 14:58
- 9☿︎ Mercury14:58 – 16:12
- 10☽︎ Moon16:12 – 17:26
- 11♄︎ Saturn17:26 – 18:40
- 12♃︎ Jupiter18:40 – 19:54
Night
- 1♂︎ Mars19:54 – 20:40
- 2☉︎ Sun20:40 – 21:26
- 3♀︎ Venus21:26 – 22:13
- 4☿︎ Mercury22:13 – 22:59
- 5☽︎ Moon22:59 – 23:45
- 6♄︎ Saturn23:45 – 00:32
- 7♃︎ Jupiter00:32 – 01:18
- 8♂︎ Mars01:18 – 02:04
- 9☉︎ Sun02:04 – 02:50
- 10♀︎ Venus02:50 – 03:37
- 11☿︎ Mercury03:37 – 04:23
- 12☽︎ Moon04:23 – 05:09
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Friday, 15 August 2025, the Sun rises at 05:08 and sets at 19:54: the day lasts 14h 46m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 05:09, lasts 9h 16m: twelve night hours of 46 min.
Which planet rules the first hour that day?
Venus, from 05:08 to 06:22: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.