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, 13 May 2025: day of Mars
- Sunrise
- 04:31
- Sunset
- 20:16
- Next sunrise
- 04:30
A day hour lasts 1h 19m; a night hour, 41 min. Local time (Europe/Warsaw).
Day
- 1♂︎ Mars04:31 – 05:50
- 2☉︎ Sun05:50 – 07:09
- 3♀︎ Venus07:09 – 08:27
- 4☿︎ Mercury08:27 – 09:46
- 5☽︎ Moon09:46 – 11:05
- 6♄︎ Saturn11:05 – 12:24
- 7♃︎ Jupiter12:24 – 13:43
- 8♂︎ Mars13:43 – 15:01
- 9☉︎ Sun15:01 – 16:20
- 10♀︎ Venus16:20 – 17:39
- 11☿︎ Mercury17:39 – 18:58
- 12☽︎ Moon18:58 – 20:16
Night
- 1♄︎ Saturn20:16 – 20:57
- 2♃︎ Jupiter20:57 – 21:39
- 3♂︎ Mars21:39 – 22:20
- 4☉︎ Sun22:20 – 23:01
- 5♀︎ Venus23:01 – 23:42
- 6☿︎ Mercury23:42 – 00:23
- 7☽︎ Moon00:23 – 01:04
- 8♄︎ Saturn01:04 – 01:45
- 9♃︎ Jupiter01:45 – 02:26
- 10♂︎ Mars02:26 – 03:07
- 11☉︎ Sun03:07 – 03:48
- 12♀︎ Venus03:48 – 04:30
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Tuesday, 13 May 2025, the Sun rises at 04:31 and sets at 20:16: the day lasts 15h 45m, that is twelve day hours of 1h 19m. The night, until the next sunrise at 04:30, lasts 8h 13m: twelve night hours of 41 min.
Which planet rules the first hour that day?
Mars, from 04:31 to 05:50: 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.