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 Saturday, 15 August 2026: day of Saturn
- Sunrise
- 04:58
- Sunset
- 18:29
- Next sunrise
- 04:58
A day hour lasts 1h 08m; a night hour, 52 min. Local time (Asia/Tokyo).
Day
- 1♄︎ Saturn04:58 – 06:05
- 2♃︎ Jupiter06:05 – 07:13
- 3♂︎ Mars07:13 – 08:21
- 4☉︎ Sun08:21 – 09:28
- 5♀︎ Venus09:28 – 10:36
- 6☿︎ Mercury10:36 – 11:43
- 7☽︎ Moon11:43 – 12:51
- 8♄︎ Saturn12:51 – 13:59
- 9♃︎ Jupiter13:59 – 15:06
- 10♂︎ Mars15:06 – 16:14
- 11☉︎ Sun16:14 – 17:21
- 12♀︎ Venus17:21 – 18:29
Night
- 1☿︎ Mercury18:29 – 19:21
- 2☽︎ Moon19:21 – 20:14
- 3♄︎ Saturn20:14 – 21:06
- 4♃︎ Jupiter21:06 – 21:59
- 5♂︎ Mars21:59 – 22:51
- 6☉︎ Sun22:51 – 23:44
- 7♀︎ Venus23:44 – 00:36
- 8☿︎ Mercury00:36 – 01:29
- 9☽︎ Moon01:29 – 02:21
- 10♄︎ Saturn02:21 – 03:14
- 11♃︎ Jupiter03:14 – 04:06
- 12♂︎ Mars04:06 – 04:58
Questions
How are the planetary hours calculated in Chiba?
On Saturday, 15 August 2026, the Sun rises at 04:58 and sets at 18:29: the day lasts 13h 31m, that is twelve day hours of 1h 08m. The night, until the next sunrise at 04:58, lasts 10h 30m: twelve night hours of 52 min.
Which planet rules the first hour that day?
Saturn, from 04:58 to 06:05: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.