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, 18 April 2026: day of Saturn
- Sunrise
- 05:03
- Sunset
- 18:14
- Next sunrise
- 05:02
A day hour lasts 1h 06m; a night hour, 54 min. Local time (Asia/Tokyo).
Day
- 1♄︎ Saturn05:03 – 06:09
- 2♃︎ Jupiter06:09 – 07:15
- 3♂︎ Mars07:15 – 08:21
- 4☉︎ Sun08:21 – 09:27
- 5♀︎ Venus09:27 – 10:33
- 6☿︎ Mercury10:33 – 11:39
- 7☽︎ Moon11:39 – 12:45
- 8♄︎ Saturn12:45 – 13:51
- 9♃︎ Jupiter13:51 – 14:57
- 10♂︎ Mars14:57 – 16:02
- 11☉︎ Sun16:02 – 17:08
- 12♀︎ Venus17:08 – 18:14
Night
- 1☿︎ Mercury18:14 – 19:08
- 2☽︎ Moon19:08 – 20:02
- 3♄︎ Saturn20:02 – 20:56
- 4♃︎ Jupiter20:56 – 21:50
- 5♂︎ Mars21:50 – 22:44
- 6☉︎ Sun22:44 – 23:38
- 7♀︎ Venus23:38 – 00:32
- 8☿︎ Mercury00:32 – 01:26
- 9☽︎ Moon01:26 – 02:20
- 10♄︎ Saturn02:20 – 03:14
- 11♃︎ Jupiter03:14 – 04:08
- 12♂︎ Mars04:08 – 05:02
Questions
How are the planetary hours calculated in Chiba?
On Saturday, 18 April 2026, the Sun rises at 05:03 and sets at 18:14: the day lasts 13h 11m, that is twelve day hours of 1h 06m. The night, until the next sunrise at 05:02, lasts 10h 48m: twelve night hours of 54 min.
Which planet rules the first hour that day?
Saturn, from 05:03 to 06:09: 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.