Planetary hours
in Osaka.
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 Monday, 22 December 2025: day of the Moon
- Sunrise
- 07:01
- Sunset
- 16:51
- Next sunrise
- 07:02
A day hour lasts 49 min; a night hour, 1h 11m. Local time (Asia/Tokyo).
Day
- 1☽︎ Moon07:01 – 07:50
- 2♄︎ Saturn07:50 – 08:39
- 3♃︎ Jupiter08:39 – 09:29
- 4♂︎ Mars09:29 – 10:18
- 5☉︎ Sun10:18 – 11:07
- 6♀︎ Venus11:07 – 11:56
- 7☿︎ Mercury11:56 – 12:45
- 8☽︎ Moon12:45 – 13:34
- 9♄︎ Saturn13:34 – 14:23
- 10♃︎ Jupiter14:23 – 15:13
- 11♂︎ Mars15:13 – 16:02
- 12☉︎ Sun16:02 – 16:51
Night
- 1♀︎ Venus16:51 – 18:02
- 2☿︎ Mercury18:02 – 19:13
- 3☽︎ Moon19:13 – 20:24
- 4♄︎ Saturn20:24 – 21:34
- 5♃︎ Jupiter21:34 – 22:45
- 6♂︎ Mars22:45 – 23:56
- 7☉︎ Sun23:56 – 01:07
- 8♀︎ Venus01:07 – 02:18
- 9☿︎ Mercury02:18 – 03:29
- 10☽︎ Moon03:29 – 04:40
- 11♄︎ Saturn04:40 – 05:51
- 12♃︎ Jupiter05:51 – 07:02
Questions
How are the planetary hours calculated in Osaka?
On Monday, 22 December 2025, the Sun rises at 07:01 and sets at 16:51: the day lasts 9h 50m, that is twelve day hours of 49 min. The night, until the next sunrise at 07:02, lasts 14h 11m: twelve night hours of 1h 11m.
Which planet rules the first hour that day?
The Moon, from 07:01 to 07:50: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.