Planetary hours
in Sendai.
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, 11 January 2025: day of Saturn
- Sunrise
- 06:53
- Sunset
- 16:35
- Next sunrise
- 06:52
A day hour lasts 49 min; a night hour, 1h 11m. Local time (Asia/Tokyo).
Day
- 1♄︎ Saturn06:53 – 07:41
- 2♃︎ Jupiter07:41 – 08:30
- 3♂︎ Mars08:30 – 09:18
- 4☉︎ Sun09:18 – 10:07
- 5♀︎ Venus10:07 – 10:55
- 6☿︎ Mercury10:55 – 11:44
- 7☽︎ Moon11:44 – 12:33
- 8♄︎ Saturn12:33 – 13:21
- 9♃︎ Jupiter13:21 – 14:10
- 10♂︎ Mars14:10 – 14:58
- 11☉︎ Sun14:58 – 15:47
- 12♀︎ Venus15:47 – 16:35
Night
- 1☿︎ Mercury16:35 – 17:47
- 2☽︎ Moon17:47 – 18:58
- 3♄︎ Saturn18:58 – 20:10
- 4♃︎ Jupiter20:10 – 21:21
- 5♂︎ Mars21:21 – 22:32
- 6☉︎ Sun22:32 – 23:44
- 7♀︎ Venus23:44 – 00:55
- 8☿︎ Mercury00:55 – 02:07
- 9☽︎ Moon02:07 – 03:18
- 10♄︎ Saturn03:18 – 04:30
- 11♃︎ Jupiter04:30 – 05:41
- 12♂︎ Mars05:41 – 06:52
Questions
How are the planetary hours calculated in Sendai?
On Saturday, 11 January 2025, the Sun rises at 06:53 and sets at 16:35: the day lasts 9h 43m, that is twelve day hours of 49 min. The night, until the next sunrise at 06:52, lasts 14h 17m: twelve night hours of 1h 11m.
Which planet rules the first hour that day?
Saturn, from 06:53 to 07:41: 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.