Planetary hours
in Chiba.
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, 24 December 2025: day of Mercury
- Sunrise
- 06:46
- Sunset
- 16:31
- Next sunrise
- 06:46
A day hour lasts 49 min; a night hour, 1h 11m. Local time (Asia/Tokyo).
Day
- 1☿︎ Mercury06:46 – 07:35
- 2☽︎ Moon07:35 – 08:23
- 3♄︎ Saturn08:23 – 09:12
- 4♃︎ Jupiter09:12 – 10:01
- 5♂︎ Mars10:01 – 10:50
- 6☉︎ Sun10:50 – 11:39
- 7♀︎ Venus11:39 – 12:27
- 8☿︎ Mercury12:27 – 13:16
- 9☽︎ Moon13:16 – 14:05
- 10♄︎ Saturn14:05 – 14:54
- 11♃︎ Jupiter14:54 – 15:42
- 12♂︎ Mars15:42 – 16:31
Night
- 1☉︎ Sun16:31 – 17:42
- 2♀︎ Venus17:42 – 18:54
- 3☿︎ Mercury18:54 – 20:05
- 4☽︎ Moon20:05 – 21:16
- 5♄︎ Saturn21:16 – 22:27
- 6♃︎ Jupiter22:27 – 23:39
- 7♂︎ Mars23:39 – 00:50
- 8☉︎ Sun00:50 – 02:01
- 9♀︎ Venus02:01 – 03:13
- 10☿︎ Mercury03:13 – 04:24
- 11☽︎ Moon04:24 – 05:35
- 12♄︎ Saturn05:35 – 06:46
Questions
How are the planetary hours calculated in Chiba?
On Wednesday, 24 December 2025, the Sun rises at 06:46 and sets at 16:31: the day lasts 9h 45m, that is twelve day hours of 49 min. The night, until the next sunrise at 06:46, lasts 14h 15m: twelve night hours of 1h 11m.
Which planet rules the first hour that day?
Mercury, from 06:46 to 07:35: 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.