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 Wednesday, 21 May 2025: day of Mercury
- Sunrise
- 04:38
- Sunset
- 19:57
- Next sunrise
- 04:37
A day hour lasts 1h 17m; a night hour, 43 min. Local time (Europe/Moscow).
Day
- 1☿︎ Mercury04:38 – 05:54
- 2☽︎ Moon05:54 – 07:11
- 3♄︎ Saturn07:11 – 08:28
- 4♃︎ Jupiter08:28 – 09:44
- 5♂︎ Mars09:44 – 11:01
- 6☉︎ Sun11:01 – 12:18
- 7♀︎ Venus12:18 – 13:34
- 8☿︎ Mercury13:34 – 14:51
- 9☽︎ Moon14:51 – 16:08
- 10♄︎ Saturn16:08 – 17:24
- 11♃︎ Jupiter17:24 – 18:41
- 12♂︎ Mars18:41 – 19:57
Night
- 1☉︎ Sun19:57 – 20:41
- 2♀︎ Venus20:41 – 21:24
- 3☿︎ Mercury21:24 – 22:07
- 4☽︎ Moon22:07 – 22:51
- 5♄︎ Saturn22:51 – 23:34
- 6♃︎ Jupiter23:34 – 00:17
- 7♂︎ Mars00:17 – 01:00
- 8☉︎ Sun01:00 – 01:44
- 9♀︎ Venus01:44 – 02:27
- 10☿︎ Mercury02:27 – 03:10
- 11☽︎ Moon03:10 – 03:53
- 12♄︎ Saturn03:53 – 04:37
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Questions
How are the planetary hours calculated in Rostov-on-Don?
On Wednesday, 21 May 2025, the Sun rises at 04:38 and sets at 19:57: the day lasts 15h 20m, that is twelve day hours of 1h 17m. The night, until the next sunrise at 04:37, lasts 8h 39m: twelve night hours of 43 min.
Which planet rules the first hour that day?
Mercury, from 04:38 to 05:54: 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.