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 Saturday, 12 July 2025: day of Saturn
- Sunrise
- 04:33
- Sunset
- 18:56
- Next sunrise
- 04:33
A day hour lasts 1h 12m; a night hour, 48 min. Local time (Asia/Tokyo).
Day
- 1♄︎ Saturn04:33 – 05:45
- 2♃︎ Jupiter05:45 – 06:57
- 3♂︎ Mars06:57 – 08:09
- 4☉︎ Sun08:09 – 09:21
- 5♀︎ Venus09:21 – 10:33
- 6☿︎ Mercury10:33 – 11:45
- 7☽︎ Moon11:45 – 12:56
- 8♄︎ Saturn12:56 – 14:08
- 9♃︎ Jupiter14:08 – 15:20
- 10♂︎ Mars15:20 – 16:32
- 11☉︎ Sun16:32 – 17:44
- 12♀︎ Venus17:44 – 18:56
Night
- 1☿︎ Mercury18:56 – 19:44
- 2☽︎ Moon19:44 – 20:32
- 3♄︎ Saturn20:32 – 21:21
- 4♃︎ Jupiter21:21 – 22:09
- 5♂︎ Mars22:09 – 22:57
- 6☉︎ Sun22:57 – 23:45
- 7♀︎ Venus23:45 – 00:33
- 8☿︎ Mercury00:33 – 01:21
- 9☽︎ Moon01:21 – 02:09
- 10♄︎ Saturn02:09 – 02:57
- 11♃︎ Jupiter02:57 – 03:45
- 12♂︎ Mars03:45 – 04:33
Questions
How are the planetary hours calculated in Chiba?
On Saturday, 12 July 2025, the Sun rises at 04:33 and sets at 18:56: the day lasts 14h 23m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 04:33, lasts 9h 37m: twelve night hours of 48 min.
Which planet rules the first hour that day?
Saturn, from 04:33 to 05:45: 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.