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 Thursday, 10 December 2026: day of Jupiter
- Sunrise
- 06:40
- Sunset
- 16:27
- Next sunrise
- 06:41
A day hour lasts 49 min; a night hour, 1h 11m. Local time (Asia/Tokyo).
Day
- 1♃︎ Jupiter06:40 – 07:29
- 2♂︎ Mars07:29 – 08:18
- 3☉︎ Sun08:18 – 09:07
- 4♀︎ Venus09:07 – 09:56
- 5☿︎ Mercury09:56 – 10:44
- 6☽︎ Moon10:44 – 11:33
- 7♄︎ Saturn11:33 – 12:22
- 8♃︎ Jupiter12:22 – 13:11
- 9♂︎ Mars13:11 – 14:00
- 10☉︎ Sun14:00 – 14:49
- 11♀︎ Venus14:49 – 15:38
- 12☿︎ Mercury15:38 – 16:27
Night
- 1☽︎ Moon16:27 – 17:38
- 2♄︎ Saturn17:38 – 18:49
- 3♃︎ Jupiter18:49 – 20:00
- 4♂︎ Mars20:00 – 21:11
- 5☉︎ Sun21:11 – 22:23
- 6♀︎ Venus22:23 – 23:34
- 7☿︎ Mercury23:34 – 00:45
- 8☽︎ Moon00:45 – 01:56
- 9♄︎ Saturn01:56 – 03:07
- 10♃︎ Jupiter03:07 – 04:18
- 11♂︎ Mars04:18 – 05:29
- 12☉︎ Sun05:29 – 06:41
Questions
How are the planetary hours calculated in Saitama?
On Thursday, 10 December 2026, the Sun rises at 06:40 and sets at 16:27: the day lasts 9h 47m, that is twelve day hours of 49 min. The night, until the next sunrise at 06:41, lasts 14h 14m: twelve night hours of 1h 11m.
Which planet rules the first hour that day?
Jupiter, from 06:40 to 07:29: 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.