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, 18 July 2025: day of Venus
- Sunrise
- 04:43
- Sunset
- 20:10
- Next sunrise
- 04:44
A day hour lasts 1h 17m; a night hour, 43 min. Local time (Europe/Moscow).
Day
- 1♀︎ Venus04:43 – 06:00
- 2☿︎ Mercury06:00 – 07:18
- 3☽︎ Moon07:18 – 08:35
- 4♄︎ Saturn08:35 – 09:52
- 5♃︎ Jupiter09:52 – 11:09
- 6♂︎ Mars11:09 – 12:27
- 7☉︎ Sun12:27 – 13:44
- 8♀︎ Venus13:44 – 15:01
- 9☿︎ Mercury15:01 – 16:18
- 10☽︎ Moon16:18 – 17:36
- 11♄︎ Saturn17:36 – 18:53
- 12♃︎ Jupiter18:53 – 20:10
Night
- 1♂︎ Mars20:10 – 20:53
- 2☉︎ Sun20:53 – 21:36
- 3♀︎ Venus21:36 – 22:19
- 4☿︎ Mercury22:19 – 23:01
- 5☽︎ Moon23:01 – 23:44
- 6♄︎ Saturn23:44 – 00:27
- 7♃︎ Jupiter00:27 – 01:10
- 8♂︎ Mars01:10 – 01:53
- 9☉︎ Sun01:53 – 02:36
- 10♀︎ Venus02:36 – 03:18
- 11☿︎ Mercury03:18 – 04:01
- 12☽︎ Moon04:01 – 04:44
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Questions
How are the planetary hours calculated in Rostov-on-Don?
On Friday, 18 July 2025, the Sun rises at 04:43 and sets at 20:10: the day lasts 15h 27m, that is twelve day hours of 1h 17m. The night, until the next sunrise at 04:44, lasts 8h 34m: twelve night hours of 43 min.
Which planet rules the first hour that day?
Venus, from 04:43 to 06:00: 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.