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 Thursday, 18 December 2025: day of Jupiter
- Sunrise
- 07:30
- Sunset
- 16:51
- Next sunrise
- 07:31
A day hour lasts 47 min; a night hour, 1h 13m. Local time (Asia/Shanghai).
Day
- 1♃︎ Jupiter07:30 – 08:17
- 2♂︎ Mars08:17 – 09:04
- 3☉︎ Sun09:04 – 09:50
- 4♀︎ Venus09:50 – 10:37
- 5☿︎ Mercury10:37 – 11:24
- 6☽︎ Moon11:24 – 12:10
- 7♄︎ Saturn12:10 – 12:57
- 8♃︎ Jupiter12:57 – 13:44
- 9♂︎ Mars13:44 – 14:31
- 10☉︎ Sun14:31 – 15:17
- 11♀︎ Venus15:17 – 16:04
- 12☿︎ Mercury16:04 – 16:51
Night
- 1☽︎ Moon16:51 – 18:04
- 2♄︎ Saturn18:04 – 19:17
- 3♃︎ Jupiter19:17 – 20:31
- 4♂︎ Mars20:31 – 21:44
- 5☉︎ Sun21:44 – 22:57
- 6♀︎ Venus22:57 – 00:11
- 7☿︎ Mercury00:11 – 01:24
- 8☽︎ Moon01:24 – 02:37
- 9♄︎ Saturn02:37 – 03:51
- 10♃︎ Jupiter03:51 – 05:04
- 11♂︎ Mars05:04 – 06:17
- 12☉︎ Sun06:17 – 07:31
Other cities · China
Questions
How are the planetary hours calculated in Beijing?
On Thursday, 18 December 2025, the Sun rises at 07:30 and sets at 16:51: the day lasts 9h 21m, that is twelve day hours of 47 min. The night, until the next sunrise at 07:31, lasts 14h 40m: twelve night hours of 1h 13m.
Which planet rules the first hour that day?
Jupiter, from 07:30 to 08:17: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.