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 Thursday, 21 May 2026: day of Jupiter
- Sunrise
- 04:30
- Sunset
- 18:41
- Next sunrise
- 04:30
A day hour lasts 1h 11m; a night hour, 49 min. Local time (Asia/Tokyo).
Day
- 1♃︎ Jupiter04:30 – 05:41
- 2♂︎ Mars05:41 – 06:52
- 3☉︎ Sun06:52 – 08:03
- 4♀︎ Venus08:03 – 09:14
- 5☿︎ Mercury09:14 – 10:25
- 6☽︎ Moon10:25 – 11:36
- 7♄︎ Saturn11:36 – 12:47
- 8♃︎ Jupiter12:47 – 13:58
- 9♂︎ Mars13:58 – 15:09
- 10☉︎ Sun15:09 – 16:20
- 11♀︎ Venus16:20 – 17:30
- 12☿︎ Mercury17:30 – 18:41
Night
- 1☽︎ Moon18:41 – 19:30
- 2♄︎ Saturn19:30 – 20:19
- 3♃︎ Jupiter20:19 – 21:08
- 4♂︎ Mars21:08 – 21:57
- 5☉︎ Sun21:57 – 22:46
- 6♀︎ Venus22:46 – 23:36
- 7☿︎ Mercury23:36 – 00:25
- 8☽︎ Moon00:25 – 01:14
- 9♄︎ Saturn01:14 – 02:03
- 10♃︎ Jupiter02:03 – 02:52
- 11♂︎ Mars02:52 – 03:41
- 12☉︎ Sun03:41 – 04:30
Questions
How are the planetary hours calculated in Chiba?
On Thursday, 21 May 2026, the Sun rises at 04:30 and sets at 18:41: the day lasts 14h 11m, that is twelve day hours of 1h 11m. The night, until the next sunrise at 04:30, lasts 9h 48m: twelve night hours of 49 min.
Which planet rules the first hour that day?
Jupiter, from 04:30 to 05:41: 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.