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 Monday, 18 May 2026: day of the Moon
- Sunrise
- 04:24
- Sunset
- 20:24
- Next sunrise
- 04:22
A day hour lasts 1h 20m; a night hour, 40 min. Local time (Europe/Warsaw).
Day
- 1☽︎ Moon04:24 – 05:44
- 2♄︎ Saturn05:44 – 07:04
- 3♃︎ Jupiter07:04 – 08:24
- 4♂︎ Mars08:24 – 09:44
- 5☉︎ Sun09:44 – 11:04
- 6♀︎ Venus11:04 – 12:24
- 7☿︎ Mercury12:24 – 13:44
- 8☽︎ Moon13:44 – 15:04
- 9♄︎ Saturn15:04 – 16:24
- 10♃︎ Jupiter16:24 – 17:44
- 11♂︎ Mars17:44 – 19:04
- 12☉︎ Sun19:04 – 20:24
Night
- 1♀︎ Venus20:24 – 21:04
- 2☿︎ Mercury21:04 – 21:44
- 3☽︎ Moon21:44 – 22:24
- 4♄︎ Saturn22:24 – 23:03
- 5♃︎ Jupiter23:03 – 23:43
- 6♂︎ Mars23:43 – 00:23
- 7☉︎ Sun00:23 – 01:03
- 8♀︎ Venus01:03 – 01:43
- 9☿︎ Mercury01:43 – 02:23
- 10☽︎ Moon02:23 – 03:02
- 11♄︎ Saturn03:02 – 03:42
- 12♃︎ Jupiter03:42 – 04:22
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Monday, 18 May 2026, the Sun rises at 04:24 and sets at 20:24: the day lasts 16h 00m, that is twelve day hours of 1h 20m. The night, until the next sunrise at 04:22, lasts 7h 58m: twelve night hours of 40 min.
Which planet rules the first hour that day?
The Moon, from 04:24 to 05:44: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.