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 Wednesday, 16 July 2025: day of Mercury
- Sunrise
- 04:20
- Sunset
- 20:45
- Next sunrise
- 04:22
A day hour lasts 1h 22m; a night hour, 38 min. Local time (Europe/Warsaw).
Day
- 1☿︎ Mercury04:20 – 05:42
- 2☽︎ Moon05:42 – 07:04
- 3♄︎ Saturn07:04 – 08:26
- 4♃︎ Jupiter08:26 – 09:48
- 5♂︎ Mars09:48 – 11:11
- 6☉︎ Sun11:11 – 12:33
- 7♀︎ Venus12:33 – 13:55
- 8☿︎ Mercury13:55 – 15:17
- 9☽︎ Moon15:17 – 16:39
- 10♄︎ Saturn16:39 – 18:01
- 11♃︎ Jupiter18:01 – 19:23
- 12♂︎ Mars19:23 – 20:45
Night
- 1☉︎ Sun20:45 – 21:23
- 2♀︎ Venus21:23 – 22:01
- 3☿︎ Mercury22:01 – 22:39
- 4☽︎ Moon22:39 – 23:17
- 5♄︎ Saturn23:17 – 23:55
- 6♃︎ Jupiter23:55 – 00:33
- 7♂︎ Mars00:33 – 01:11
- 8☉︎ Sun01:11 – 01:49
- 9♀︎ Venus01:49 – 02:27
- 10☿︎ Mercury02:27 – 03:06
- 11☽︎ Moon03:06 – 03:44
- 12♄︎ Saturn03:44 – 04:22
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Wednesday, 16 July 2025, the Sun rises at 04:20 and sets at 20:45: the day lasts 16h 24m, that is twelve day hours of 1h 22m. The night, until the next sunrise at 04:22, lasts 7h 37m: twelve night hours of 38 min.
Which planet rules the first hour that day?
Mercury, from 04:20 to 05:42: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.