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 Tuesday, 16 December 2025: day of Mars
- Sunrise
- 08:01
- Sunset
- 16:31
- Next sunrise
- 08:02
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Moscow).
Day
- 1♂︎ Mars08:01 – 08:44
- 2☉︎ Sun08:44 – 09:26
- 3♀︎ Venus09:26 – 10:09
- 4☿︎ Mercury10:09 – 10:51
- 5☽︎ Moon10:51 – 11:34
- 6♄︎ Saturn11:34 – 12:16
- 7♃︎ Jupiter12:16 – 12:59
- 8♂︎ Mars12:59 – 13:41
- 9☉︎ Sun13:41 – 14:24
- 10♀︎ Venus14:24 – 15:06
- 11☿︎ Mercury15:06 – 15:49
- 12☽︎ Moon15:49 – 16:31
Night
- 1♄︎ Saturn16:31 – 17:49
- 2♃︎ Jupiter17:49 – 19:06
- 3♂︎ Mars19:06 – 20:24
- 4☉︎ Sun20:24 – 21:42
- 5♀︎ Venus21:42 – 22:59
- 6☿︎ Mercury22:59 – 00:17
- 7☽︎ Moon00:17 – 01:34
- 8♄︎ Saturn01:34 – 02:52
- 9♃︎ Jupiter02:52 – 04:09
- 10♂︎ Mars04:09 – 05:27
- 11☉︎ Sun05:27 – 06:44
- 12♀︎ Venus06:44 – 08:02
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Questions
How are the planetary hours calculated in Rostov-on-Don?
On Tuesday, 16 December 2025, the Sun rises at 08:01 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 08:02, lasts 15h 31m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Mars, from 08:01 to 08:44: 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.