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, 13 May 2025: day of Mars
- Sunrise
- 04:36
- Sunset
- 18:35
- Next sunrise
- 04:35
A day hour lasts 1h 10m; a night hour, 50 min. Local time (Asia/Tokyo).
Day
- 1♂︎ Mars04:36 – 05:46
- 2☉︎ Sun05:46 – 06:56
- 3♀︎ Venus06:56 – 08:06
- 4☿︎ Mercury08:06 – 09:16
- 5☽︎ Moon09:16 – 10:26
- 6♄︎ Saturn10:26 – 11:36
- 7♃︎ Jupiter11:36 – 12:46
- 8♂︎ Mars12:46 – 13:55
- 9☉︎ Sun13:55 – 15:05
- 10♀︎ Venus15:05 – 16:15
- 11☿︎ Mercury16:15 – 17:25
- 12☽︎ Moon17:25 – 18:35
Night
- 1♄︎ Saturn18:35 – 19:25
- 2♃︎ Jupiter19:25 – 20:15
- 3♂︎ Mars20:15 – 21:05
- 4☉︎ Sun21:05 – 21:55
- 5♀︎ Venus21:55 – 22:45
- 6☿︎ Mercury22:45 – 23:35
- 7☽︎ Moon23:35 – 00:25
- 8♄︎ Saturn00:25 – 01:15
- 9♃︎ Jupiter01:15 – 02:05
- 10♂︎ Mars02:05 – 02:55
- 11☉︎ Sun02:55 – 03:45
- 12♀︎ Venus03:45 – 04:35
Questions
How are the planetary hours calculated in Chiba?
On Tuesday, 13 May 2025, the Sun rises at 04:36 and sets at 18:35: the day lasts 13h 59m, that is twelve day hours of 1h 10m. The night, until the next sunrise at 04:35, lasts 10h 00m: twelve night hours of 50 min.
Which planet rules the first hour that day?
Mars, from 04:36 to 05:46: 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.