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, 20 May 2026: day of Mercury
- Sunrise
- 04:39
- Sunset
- 19:56
- Next sunrise
- 04:38
A day hour lasts 1h 16m; a night hour, 44 min. Local time (Europe/Moscow).
Day
- 1☿︎ Mercury04:39 – 05:56
- 2☽︎ Moon05:56 – 07:12
- 3♄︎ Saturn07:12 – 08:28
- 4♃︎ Jupiter08:28 – 09:45
- 5♂︎ Mars09:45 – 11:01
- 6☉︎ Sun11:01 – 12:18
- 7♀︎ Venus12:18 – 13:34
- 8☿︎ Mercury13:34 – 14:50
- 9☽︎ Moon14:50 – 16:07
- 10♄︎ Saturn16:07 – 17:23
- 11♃︎ Jupiter17:23 – 18:40
- 12♂︎ Mars18:40 – 19:56
Night
- 1☉︎ Sun19:56 – 20:40
- 2♀︎ Venus20:40 – 21:23
- 3☿︎ Mercury21:23 – 22:07
- 4☽︎ Moon22:07 – 22:50
- 5♄︎ Saturn22:50 – 23:34
- 6♃︎ Jupiter23:34 – 00:17
- 7♂︎ Mars00:17 – 01:01
- 8☉︎ Sun01:01 – 01:44
- 9♀︎ Venus01:44 – 02:28
- 10☿︎ Mercury02:28 – 03:11
- 11☽︎ Moon03:11 – 03:55
- 12♄︎ Saturn03:55 – 04:38
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Questions
How are the planetary hours calculated in Rostov-on-Don?
On Wednesday, 20 May 2026, the Sun rises at 04:39 and sets at 19:56: the day lasts 15h 17m, that is twelve day hours of 1h 16m. The night, until the next sunrise at 04:38, lasts 8h 42m: twelve night hours of 44 min.
Which planet rules the first hour that day?
Mercury, from 04:39 to 05:56: 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.