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, 19 August 2026: day of Mercury
- Sunrise
- 05:14
- Sunset
- 19:46
- Next sunrise
- 05:16
A day hour lasts 1h 13m; a night hour, 48 min. Local time (Europe/Warsaw).
Day
- 1☿︎ Mercury05:14 – 06:27
- 2☽︎ Moon06:27 – 07:39
- 3♄︎ Saturn07:39 – 08:52
- 4♃︎ Jupiter08:52 – 10:05
- 5♂︎ Mars10:05 – 11:17
- 6☉︎ Sun11:17 – 12:30
- 7♀︎ Venus12:30 – 13:43
- 8☿︎ Mercury13:43 – 14:55
- 9☽︎ Moon14:55 – 16:08
- 10♄︎ Saturn16:08 – 17:20
- 11♃︎ Jupiter17:20 – 18:33
- 12♂︎ Mars18:33 – 19:46
Night
- 1☉︎ Sun19:46 – 20:33
- 2♀︎ Venus20:33 – 21:21
- 3☿︎ Mercury21:21 – 22:08
- 4☽︎ Moon22:08 – 22:56
- 5♄︎ Saturn22:56 – 23:43
- 6♃︎ Jupiter23:43 – 00:31
- 7♂︎ Mars00:31 – 01:18
- 8☉︎ Sun01:18 – 02:06
- 9♀︎ Venus02:06 – 02:53
- 10☿︎ Mercury02:53 – 03:41
- 11☽︎ Moon03:41 – 04:28
- 12♄︎ Saturn04:28 – 05:16
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Wednesday, 19 August 2026, the Sun rises at 05:14 and sets at 19:46: the day lasts 14h 32m, that is twelve day hours of 1h 13m. The night, until the next sunrise at 05:16, lasts 9h 30m: twelve night hours of 48 min.
Which planet rules the first hour that day?
Mercury, from 05:14 to 06:27: 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.