Planetary hours
in Saitama.
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, 15 December 2025: day of the Moon
- Sunrise
- 06:44
- Sunset
- 16:28
- Next sunrise
- 06:44
A day hour lasts 49 min; a night hour, 1h 11m. Local time (Asia/Tokyo).
Day
- 1☽︎ Moon06:44 – 07:32
- 2♄︎ Saturn07:32 – 08:21
- 3♃︎ Jupiter08:21 – 09:10
- 4♂︎ Mars09:10 – 09:58
- 5☉︎ Sun09:58 – 10:47
- 6♀︎ Venus10:47 – 11:36
- 7☿︎ Mercury11:36 – 12:25
- 8☽︎ Moon12:25 – 13:13
- 9♄︎ Saturn13:13 – 14:02
- 10♃︎ Jupiter14:02 – 14:51
- 11♂︎ Mars14:51 – 15:39
- 12☉︎ Sun15:39 – 16:28
Night
- 1♀︎ Venus16:28 – 17:39
- 2☿︎ Mercury17:39 – 18:51
- 3☽︎ Moon18:51 – 20:02
- 4♄︎ Saturn20:02 – 21:13
- 5♃︎ Jupiter21:13 – 22:25
- 6♂︎ Mars22:25 – 23:36
- 7☉︎ Sun23:36 – 00:48
- 8♀︎ Venus00:48 – 01:59
- 9☿︎ Mercury01:59 – 03:10
- 10☽︎ Moon03:10 – 04:22
- 11♄︎ Saturn04:22 – 05:33
- 12♃︎ Jupiter05:33 – 06:44
Questions
How are the planetary hours calculated in Saitama?
On Monday, 15 December 2025, the Sun rises at 06:44 and sets at 16:28: the day lasts 9h 44m, that is twelve day hours of 49 min. The night, until the next sunrise at 06:44, lasts 14h 16m: twelve night hours of 1h 11m.
Which planet rules the first hour that day?
The Moon, from 06:44 to 07:32: 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.