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, 21 July 2026: day of Mars
- Sunrise
- 04:27
- Sunset
- 20:39
- Next sunrise
- 04:28
A day hour lasts 1h 21m; a night hour, 39 min. Local time (Europe/Warsaw).
Day
- 1♂︎ Mars04:27 – 05:48
- 2☉︎ Sun05:48 – 07:09
- 3♀︎ Venus07:09 – 08:30
- 4☿︎ Mercury08:30 – 09:51
- 5☽︎ Moon09:51 – 11:12
- 6♄︎ Saturn11:12 – 12:33
- 7♃︎ Jupiter12:33 – 13:54
- 8♂︎ Mars13:54 – 15:15
- 9☉︎ Sun15:15 – 16:36
- 10♀︎ Venus16:36 – 17:57
- 11☿︎ Mercury17:57 – 19:18
- 12☽︎ Moon19:18 – 20:39
Night
- 1♄︎ Saturn20:39 – 21:18
- 2♃︎ Jupiter21:18 – 21:57
- 3♂︎ Mars21:57 – 22:36
- 4☉︎ Sun22:36 – 23:15
- 5♀︎ Venus23:15 – 23:54
- 6☿︎ Mercury23:54 – 00:34
- 7☽︎ Moon00:34 – 01:13
- 8♄︎ Saturn01:13 – 01:52
- 9♃︎ Jupiter01:52 – 02:31
- 10♂︎ Mars02:31 – 03:10
- 11☉︎ Sun03:10 – 03:49
- 12♀︎ Venus03:49 – 04:28
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Tuesday, 21 July 2026, the Sun rises at 04:27 and sets at 20:39: the day lasts 16h 12m, that is twelve day hours of 1h 21m. The night, until the next sunrise at 04:28, lasts 7h 50m: twelve night hours of 39 min.
Which planet rules the first hour that day?
Mars, from 04:27 to 05:48: 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.