Planetary hours
in Beijing.
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 Saturday, 20 December 2025: day of Saturn
- Sunrise
- 07:31
- Sunset
- 16:52
- Next sunrise
- 07:32
A day hour lasts 47 min; a night hour, 1h 13m. Local time (Asia/Shanghai).
Day
- 1♄︎ Saturn07:31 – 08:18
- 2♃︎ Jupiter08:18 – 09:05
- 3♂︎ Mars09:05 – 09:51
- 4☉︎ Sun09:51 – 10:38
- 5♀︎ Venus10:38 – 11:25
- 6☿︎ Mercury11:25 – 12:11
- 7☽︎ Moon12:11 – 12:58
- 8♄︎ Saturn12:58 – 13:45
- 9♃︎ Jupiter13:45 – 14:31
- 10♂︎ Mars14:31 – 15:18
- 11☉︎ Sun15:18 – 16:05
- 12♀︎ Venus16:05 – 16:52
Night
- 1☿︎ Mercury16:52 – 18:05
- 2☽︎ Moon18:05 – 19:18
- 3♄︎ Saturn19:18 – 20:32
- 4♃︎ Jupiter20:32 – 21:45
- 5♂︎ Mars21:45 – 22:58
- 6☉︎ Sun22:58 – 00:12
- 7♀︎ Venus00:12 – 01:25
- 8☿︎ Mercury01:25 – 02:38
- 9☽︎ Moon02:38 – 03:52
- 10♄︎ Saturn03:52 – 05:05
- 11♃︎ Jupiter05:05 – 06:18
- 12♂︎ Mars06:18 – 07:32
Other cities · China
Questions
How are the planetary hours calculated in Beijing?
On Saturday, 20 December 2025, the Sun rises at 07:31 and sets at 16:52: the day lasts 9h 20m, that is twelve day hours of 47 min. The night, until the next sunrise at 07:32, lasts 14h 40m: twelve night hours of 1h 13m.
Which planet rules the first hour that day?
Saturn, from 07:31 to 08:18: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.