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, 17 July 2026: day of Venus
- Sunrise
- 04:21
- Sunset
- 20:44
- Next sunrise
- 04:23
A day hour lasts 1h 22m; a night hour, 38 min. Local time (Europe/Warsaw).
Day
- 1♀︎ Venus04:21 – 05:43
- 2☿︎ Mercury05:43 – 07:05
- 3☽︎ Moon07:05 – 08:27
- 4♄︎ Saturn08:27 – 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 – 18:00
- 11♄︎ Saturn18:00 – 19:22
- 12♃︎ Jupiter19:22 – 20:44
Night
- 1♂︎ Mars20:44 – 21:22
- 2☉︎ Sun21:22 – 22:00
- 3♀︎ Venus22:00 – 22:39
- 4☿︎ Mercury22:39 – 23:17
- 5☽︎ Moon23:17 – 23:55
- 6♄︎ Saturn23:55 – 00:33
- 7♃︎ Jupiter00:33 – 01:12
- 8♂︎ Mars01:12 – 01:50
- 9☉︎ Sun01:50 – 02:28
- 10♀︎ Venus02:28 – 03:06
- 11☿︎ Mercury03:06 – 03:44
- 12☽︎ Moon03:44 – 04:23
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Friday, 17 July 2026, the Sun rises at 04:21 and sets at 20:44: the day lasts 16h 22m, that is twelve day hours of 1h 22m. The night, until the next sunrise at 04:23, lasts 7h 39m: twelve night hours of 38 min.
Which planet rules the first hour that day?
Venus, from 04:21 to 05:43: 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.