Planetary hours
in Hrodna.
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, 17 December 2025: day of Mercury
- Sunrise
- 09:37
- Sunset
- 17:04
- Next sunrise
- 09:37
A day hour lasts 37 min; a night hour, 1h 23m. Local time (Europe/Minsk).
Day
- 1☿︎ Mercury09:37 – 10:14
- 2☽︎ Moon10:14 – 10:51
- 3♄︎ Saturn10:51 – 11:29
- 4♃︎ Jupiter11:29 – 12:06
- 5♂︎ Mars12:06 – 12:43
- 6☉︎ Sun12:43 – 13:20
- 7♀︎ Venus13:20 – 13:58
- 8☿︎ Mercury13:58 – 14:35
- 9☽︎ Moon14:35 – 15:12
- 10♄︎ Saturn15:12 – 15:49
- 11♃︎ Jupiter15:49 – 16:27
- 12♂︎ Mars16:27 – 17:04
Night
- 1☉︎ Sun17:04 – 18:27
- 2♀︎ Venus18:27 – 19:49
- 3☿︎ Mercury19:49 – 21:12
- 4☽︎ Moon21:12 – 22:35
- 5♄︎ Saturn22:35 – 23:58
- 6♃︎ Jupiter23:58 – 01:21
- 7♂︎ Mars01:21 – 02:43
- 8☉︎ Sun02:43 – 04:06
- 9♀︎ Venus04:06 – 05:29
- 10☿︎ Mercury05:29 – 06:52
- 11☽︎ Moon06:52 – 08:15
- 12♄︎ Saturn08:15 – 09:37
Questions
How are the planetary hours calculated in Hrodna?
On Wednesday, 17 December 2025, the Sun rises at 09:37 and sets at 17:04: the day lasts 7h 27m, that is twelve day hours of 37 min. The night, until the next sunrise at 09:37, lasts 16h 34m: twelve night hours of 1h 23m.
Which planet rules the first hour that day?
Mercury, from 09:37 to 10:14: 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.