Planetary hours
in Rostov-on-Don.
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 Friday, 19 December 2025: day of Venus
- Sunrise
- 08:03
- Sunset
- 16:32
- Next sunrise
- 08:04
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Moscow).
Day
- 1♀︎ Venus08:03 – 08:46
- 2☿︎ Mercury08:46 – 09:28
- 3☽︎ Moon09:28 – 10:11
- 4♄︎ Saturn10:11 – 10:53
- 5♃︎ Jupiter10:53 – 11:35
- 6♂︎ Mars11:35 – 12:18
- 7☉︎ Sun12:18 – 13:00
- 8♀︎ Venus13:00 – 13:43
- 9☿︎ Mercury13:43 – 14:25
- 10☽︎ Moon14:25 – 15:07
- 11♄︎ Saturn15:07 – 15:50
- 12♃︎ Jupiter15:50 – 16:32
Night
- 1♂︎ Mars16:32 – 17:50
- 2☉︎ Sun17:50 – 19:08
- 3♀︎ Venus19:08 – 20:25
- 4☿︎ Mercury20:25 – 21:43
- 5☽︎ Moon21:43 – 23:00
- 6♄︎ Saturn23:00 – 00:18
- 7♃︎ Jupiter00:18 – 01:36
- 8♂︎ Mars01:36 – 02:53
- 9☉︎ Sun02:53 – 04:11
- 10♀︎ Venus04:11 – 05:29
- 11☿︎ Mercury05:29 – 06:46
- 12☽︎ Moon06:46 – 08:04
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Questions
How are the planetary hours calculated in Rostov-on-Don?
On Friday, 19 December 2025, the Sun rises at 08:03 and sets at 16:32: the day lasts 8h 29m, that is twelve day hours of 42 min. The night, until the next sunrise at 08:04, lasts 15h 32m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Venus, from 08:03 to 08:46: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.