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, 18 July 2025: day of Venus
- Sunrise
- 04:23
- Sunset
- 20:42
- Next sunrise
- 04:24
A day hour lasts 1h 22m; a night hour, 39 min. Local time (Europe/Warsaw).
Day
- 1♀︎ Venus04:23 – 05:45
- 2☿︎ Mercury05:45 – 07:06
- 3☽︎ Moon07:06 – 08:28
- 4♄︎ Saturn08:28 – 09:49
- 5♃︎ Jupiter09:49 – 11:11
- 6♂︎ Mars11:11 – 12:33
- 7☉︎ Sun12:33 – 13:54
- 8♀︎ Venus13:54 – 15:16
- 9☿︎ Mercury15:16 – 16:38
- 10☽︎ Moon16:38 – 17:59
- 11♄︎ Saturn17:59 – 19:21
- 12♃︎ Jupiter19:21 – 20:42
Night
- 1♂︎ Mars20:42 – 21:21
- 2☉︎ Sun21:21 – 21:59
- 3♀︎ Venus21:59 – 22:38
- 4☿︎ Mercury22:38 – 23:16
- 5☽︎ Moon23:16 – 23:55
- 6♄︎ Saturn23:55 – 00:33
- 7♃︎ Jupiter00:33 – 01:12
- 8♂︎ Mars01:12 – 01:50
- 9☉︎ Sun01:50 – 02:29
- 10♀︎ Venus02:29 – 03:07
- 11☿︎ Mercury03:07 – 03:46
- 12☽︎ Moon03:46 – 04:24
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Friday, 18 July 2025, the Sun rises at 04:23 and sets at 20:42: the day lasts 16h 19m, that is twelve day hours of 1h 22m. The night, until the next sunrise at 04:24, lasts 7h 42m: twelve night hours of 39 min.
Which planet rules the first hour that day?
Venus, from 04:23 to 05:45: 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.