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 Tuesday, 12 May 2026: day of Mars
- Sunrise
- 04:33
- Sunset
- 20:14
- Next sunrise
- 04:32
A day hour lasts 1h 18m; a night hour, 41 min. Local time (Europe/Warsaw).
Day
- 1♂︎ Mars04:33 – 05:52
- 2☉︎ Sun05:52 – 07:10
- 3♀︎ Venus07:10 – 08:29
- 4☿︎ Mercury08:29 – 09:47
- 5☽︎ Moon09:47 – 11:05
- 6♄︎ Saturn11:05 – 12:24
- 7♃︎ Jupiter12:24 – 13:42
- 8♂︎ Mars13:42 – 15:01
- 9☉︎ Sun15:01 – 16:19
- 10♀︎ Venus16:19 – 17:37
- 11☿︎ Mercury17:37 – 18:56
- 12☽︎ Moon18:56 – 20:14
Night
- 1♄︎ Saturn20:14 – 20:56
- 2♃︎ Jupiter20:56 – 21:37
- 3♂︎ Mars21:37 – 22:19
- 4☉︎ Sun22:19 – 23:00
- 5♀︎ Venus23:00 – 23:41
- 6☿︎ Mercury23:41 – 00:23
- 7☽︎ Moon00:23 – 01:04
- 8♄︎ Saturn01:04 – 01:46
- 9♃︎ Jupiter01:46 – 02:27
- 10♂︎ Mars02:27 – 03:09
- 11☉︎ Sun03:09 – 03:50
- 12♀︎ Venus03:50 – 04:32
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Tuesday, 12 May 2026, the Sun rises at 04:33 and sets at 20:14: the day lasts 15h 41m, that is twelve day hours of 1h 18m. The night, until the next sunrise at 04:32, lasts 8h 17m: twelve night hours of 41 min.
Which planet rules the first hour that day?
Mars, from 04:33 to 05:52: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.