Planetary hours
in Hiroshima.
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 Friday, 12 December 2025: day of Venus
- Sunrise
- 07:06
- Sunset
- 17:00
- Next sunrise
- 07:07
A day hour lasts 49 min; a night hour, 1h 11m. Local time (Asia/Tokyo).
Day
- 1♀︎ Venus07:06 – 07:56
- 2☿︎ Mercury07:56 – 08:45
- 3☽︎ Moon08:45 – 09:35
- 4♄︎ Saturn09:35 – 10:24
- 5♃︎ Jupiter10:24 – 11:14
- 6♂︎ Mars11:14 – 12:03
- 7☉︎ Sun12:03 – 12:53
- 8♀︎ Venus12:53 – 13:42
- 9☿︎ Mercury13:42 – 14:32
- 10☽︎ Moon14:32 – 15:21
- 11♄︎ Saturn15:21 – 16:11
- 12♃︎ Jupiter16:11 – 17:00
Night
- 1♂︎ Mars17:00 – 18:11
- 2☉︎ Sun18:11 – 19:21
- 3♀︎ Venus19:21 – 20:32
- 4☿︎ Mercury20:32 – 21:42
- 5☽︎ Moon21:42 – 22:53
- 6♄︎ Saturn22:53 – 00:04
- 7♃︎ Jupiter00:04 – 01:14
- 8♂︎ Mars01:14 – 02:25
- 9☉︎ Sun02:25 – 03:35
- 10♀︎ Venus03:35 – 04:46
- 11☿︎ Mercury04:46 – 05:57
- 12☽︎ Moon05:57 – 07:07
Questions
How are the planetary hours calculated in Hiroshima?
On Friday, 12 December 2025, the Sun rises at 07:06 and sets at 17:00: the day lasts 9h 54m, that is twelve day hours of 49 min. The night, until the next sunrise at 07:07, lasts 14h 07m: twelve night hours of 1h 11m.
Which planet rules the first hour that day?
Venus, from 07:06 to 07:56: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.