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 Sunday, 10 May 2026: day of the Sun
- Sunrise
- 04:39
- Sunset
- 18:33
- Next sunrise
- 04:38
A day hour lasts 1h 09m; a night hour, 50 min. Local time (Asia/Tokyo).
Day
- 1☉︎ Sun04:39 – 05:48
- 2♀︎ Venus05:48 – 06:58
- 3☿︎ Mercury06:58 – 08:07
- 4☽︎ Moon08:07 – 09:17
- 5♄︎ Saturn09:17 – 10:26
- 6♃︎ Jupiter10:26 – 11:36
- 7♂︎ Mars11:36 – 12:45
- 8☉︎ Sun12:45 – 13:55
- 9♀︎ Venus13:55 – 15:04
- 10☿︎ Mercury15:04 – 16:14
- 11☽︎ Moon16:14 – 17:23
- 12♄︎ Saturn17:23 – 18:33
Night
- 1♃︎ Jupiter18:33 – 19:23
- 2♂︎ Mars19:23 – 20:13
- 3☉︎ Sun20:13 – 21:04
- 4♀︎ Venus21:04 – 21:54
- 5☿︎ Mercury21:54 – 22:45
- 6☽︎ Moon22:45 – 23:35
- 7♄︎ Saturn23:35 – 00:26
- 8♃︎ Jupiter00:26 – 01:16
- 9♂︎ Mars01:16 – 02:07
- 10☉︎ Sun02:07 – 02:57
- 11♀︎ Venus02:57 – 03:47
- 12☿︎ Mercury03:47 – 04:38
Questions
How are the planetary hours calculated in Chiba?
On Sunday, 10 May 2026, the Sun rises at 04:39 and sets at 18:33: the day lasts 13h 54m, that is twelve day hours of 1h 09m. The night, until the next sunrise at 04:38, lasts 10h 05m: twelve night hours of 50 min.
Which planet rules the first hour that day?
The Sun, from 04:39 to 05:48: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.