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 Thursday, 17 December 2026: day of Jupiter
- Sunrise
- 08:02
- Sunset
- 16:31
- Next sunrise
- 08:03
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Moscow).
Day
- 1♃︎ Jupiter08:02 – 08:44
- 2♂︎ Mars08:44 – 09:27
- 3☉︎ Sun09:27 – 10:09
- 4♀︎ Venus10:09 – 10:52
- 5☿︎ Mercury10:52 – 11:34
- 6☽︎ Moon11:34 – 12:17
- 7♄︎ Saturn12:17 – 12:59
- 8♃︎ Jupiter12:59 – 13:42
- 9♂︎ Mars13:42 – 14:24
- 10☉︎ Sun14:24 – 15:07
- 11♀︎ Venus15:07 – 15:49
- 12☿︎ Mercury15:49 – 16:31
Night
- 1☽︎ Moon16:31 – 17:49
- 2♄︎ Saturn17:49 – 19:07
- 3♃︎ Jupiter19:07 – 20:24
- 4♂︎ Mars20:24 – 21:42
- 5☉︎ Sun21:42 – 22:59
- 6♀︎ Venus22:59 – 00:17
- 7☿︎ Mercury00:17 – 01:35
- 8☽︎ Moon01:35 – 02:52
- 9♄︎ Saturn02:52 – 04:10
- 10♃︎ Jupiter04:10 – 05:27
- 11♂︎ Mars05:27 – 06:45
- 12☉︎ Sun06:45 – 08:03
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Questions
How are the planetary hours calculated in Rostov-on-Don?
On Thursday, 17 December 2026, the Sun rises at 08:02 and sets at 16:31: the day lasts 8h 30m, that is twelve day hours of 42 min. The night, until the next sunrise at 08:03, lasts 15h 31m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Jupiter, from 08:02 to 08:44: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.