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 Tuesday, 20 May 2025: day of Mars
- Sunrise
- 04:31
- Sunset
- 18:41
- Next sunrise
- 04:30
A day hour lasts 1h 11m; a night hour, 49 min. Local time (Asia/Tokyo).
Day
- 1♂︎ Mars04:31 – 05:42
- 2☉︎ Sun05:42 – 06:52
- 3♀︎ Venus06:52 – 08:03
- 4☿︎ Mercury08:03 – 09:14
- 5☽︎ Moon09:14 – 10:25
- 6♄︎ Saturn10:25 – 11:36
- 7♃︎ Jupiter11:36 – 12:47
- 8♂︎ Mars12:47 – 13:57
- 9☉︎ Sun13:57 – 15:08
- 10♀︎ Venus15:08 – 16:19
- 11☿︎ Mercury16:19 – 17:30
- 12☽︎ Moon17:30 – 18:41
Night
- 1♄︎ Saturn18:41 – 19:30
- 2♃︎ Jupiter19:30 – 20:19
- 3♂︎ Mars20:19 – 21:08
- 4☉︎ Sun21:08 – 21:57
- 5♀︎ Venus21:57 – 22:46
- 6☿︎ Mercury22:46 – 23:35
- 7☽︎ Moon23:35 – 00:25
- 8♄︎ Saturn00:25 – 01:14
- 9♃︎ Jupiter01:14 – 02:03
- 10♂︎ Mars02:03 – 02:52
- 11☉︎ Sun02:52 – 03:41
- 12♀︎ Venus03:41 – 04:30
Questions
How are the planetary hours calculated in Chiba?
On Tuesday, 20 May 2025, the Sun rises at 04:31 and sets at 18:41: the day lasts 14h 10m, that is twelve day hours of 1h 11m. The night, until the next sunrise at 04:30, lasts 9h 49m: twelve night hours of 49 min.
Which planet rules the first hour that day?
Mars, from 04:31 to 05:42: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.