Planetary hours
in Bydgoszcz.
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, 21 January 2026: day of Mercury
- Sunrise
- 07:47
- Sunset
- 16:11
- Next sunrise
- 07:46
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Warsaw).
Day
- 1☿︎ Mercury07:47 – 08:29
- 2☽︎ Moon08:29 – 09:11
- 3♄︎ Saturn09:11 – 09:53
- 4♃︎ Jupiter09:53 – 10:35
- 5♂︎ Mars10:35 – 11:17
- 6☉︎ Sun11:17 – 11:59
- 7♀︎ Venus11:59 – 12:41
- 8☿︎ Mercury12:41 – 13:23
- 9☽︎ Moon13:23 – 14:05
- 10♄︎ Saturn14:05 – 14:47
- 11♃︎ Jupiter14:47 – 15:29
- 12♂︎ Mars15:29 – 16:11
Night
- 1☉︎ Sun16:11 – 17:29
- 2♀︎ Venus17:29 – 18:47
- 3☿︎ Mercury18:47 – 20:05
- 4☽︎ Moon20:05 – 21:23
- 5♄︎ Saturn21:23 – 22:40
- 6♃︎ Jupiter22:40 – 23:58
- 7♂︎ Mars23:58 – 01:16
- 8☉︎ Sun01:16 – 02:34
- 9♀︎ Venus02:34 – 03:52
- 10☿︎ Mercury03:52 – 05:10
- 11☽︎ Moon05:10 – 06:28
- 12♄︎ Saturn06:28 – 07:46
Other cities · Poland
Questions
How are the planetary hours calculated in Bydgoszcz?
On Wednesday, 21 January 2026, the Sun rises at 07:47 and sets at 16:11: the day lasts 8h 23m, that is twelve day hours of 42 min. The night, until the next sunrise at 07:46, lasts 15h 35m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Mercury, from 07:47 to 08:29: 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.