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, 20 January 2026: day of Mars
- Sunrise
- 07:59
- Sunset
- 17:05
- Next sunrise
- 07:58
A day hour lasts 45 min; a night hour, 1h 14m. Local time (Europe/Moscow).
Day
- 1♂︎ Mars07:59 – 08:45
- 2☉︎ Sun08:45 – 09:30
- 3♀︎ Venus09:30 – 10:16
- 4☿︎ Mercury10:16 – 11:01
- 5☽︎ Moon11:01 – 11:46
- 6♄︎ Saturn11:46 – 12:32
- 7♃︎ Jupiter12:32 – 13:17
- 8♂︎ Mars13:17 – 14:03
- 9☉︎ Sun14:03 – 14:48
- 10♀︎ Venus14:48 – 15:34
- 11☿︎ Mercury15:34 – 16:19
- 12☽︎ Moon16:19 – 17:05
Night
- 1♄︎ Saturn17:05 – 18:19
- 2♃︎ Jupiter18:19 – 19:33
- 3♂︎ Mars19:33 – 20:48
- 4☉︎ Sun20:48 – 22:02
- 5♀︎ Venus22:02 – 23:17
- 6☿︎ Mercury23:17 – 00:31
- 7☽︎ Moon00:31 – 01:46
- 8♄︎ Saturn01:46 – 03:00
- 9♃︎ Jupiter03:00 – 04:15
- 10♂︎ Mars04:15 – 05:29
- 11☉︎ Sun05:29 – 06:44
- 12♀︎ Venus06:44 – 07:58
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Questions
How are the planetary hours calculated in Rostov-on-Don?
On Tuesday, 20 January 2026, the Sun rises at 07:59 and sets at 17:05: the day lasts 9h 05m, that is twelve day hours of 45 min. The night, until the next sunrise at 07:58, lasts 14h 54m: twelve night hours of 1h 14m.
Which planet rules the first hour that day?
Mars, from 07:59 to 08:45: 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.