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, 20 January 2027: day of Mercury
- Sunrise
- 07:28
- Sunset
- 15:48
- Next sunrise
- 07:27
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Warsaw).
Day
- 1☿︎ Mercury07:28 – 08:10
- 2☽︎ Moon08:10 – 08:51
- 3♄︎ Saturn08:51 – 09:33
- 4♃︎ Jupiter09:33 – 10:15
- 5♂︎ Mars10:15 – 10:56
- 6☉︎ Sun10:56 – 11:38
- 7♀︎ Venus11:38 – 12:20
- 8☿︎ Mercury12:20 – 13:01
- 9☽︎ Moon13:01 – 13:43
- 10♄︎ Saturn13:43 – 14:25
- 11♃︎ Jupiter14:25 – 15:06
- 12♂︎ Mars15:06 – 15:48
Night
- 1☉︎ Sun15:48 – 17:06
- 2♀︎ Venus17:06 – 18:24
- 3☿︎ Mercury18:24 – 19:43
- 4☽︎ Moon19:43 – 21:01
- 5♄︎ Saturn21:01 – 22:19
- 6♃︎ Jupiter22:19 – 23:37
- 7♂︎ Mars23:37 – 00:56
- 8☉︎ Sun00:56 – 02:14
- 9♀︎ Venus02:14 – 03:32
- 10☿︎ Mercury03:32 – 04:50
- 11☽︎ Moon04:50 – 06:09
- 12♄︎ Saturn06:09 – 07:27
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Wednesday, 20 January 2027, the Sun rises at 07:28 and sets at 15:48: the day lasts 8h 20m, that is twelve day hours of 42 min. The night, until the next sunrise at 07:27, lasts 15h 39m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Mercury, from 07:28 to 08:10: 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.