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, 10 April 2027: day of Saturn
- Sunrise
- 05:09
- Sunset
- 18:07
- Next sunrise
- 05:07
A day hour lasts 1h 05m; a night hour, 55 min. Local time (Asia/Tokyo).
Day
- 1♄︎ Saturn05:09 – 06:14
- 2♃︎ Jupiter06:14 – 07:18
- 3♂︎ Mars07:18 – 08:23
- 4☉︎ Sun08:23 – 09:28
- 5♀︎ Venus09:28 – 10:33
- 6☿︎ Mercury10:33 – 11:38
- 7☽︎ Moon11:38 – 12:43
- 8♄︎ Saturn12:43 – 13:48
- 9♃︎ Jupiter13:48 – 14:52
- 10♂︎ Mars14:52 – 15:57
- 11☉︎ Sun15:57 – 17:02
- 12♀︎ Venus17:02 – 18:07
Night
- 1☿︎ Mercury18:07 – 19:02
- 2☽︎ Moon19:02 – 19:57
- 3♄︎ Saturn19:57 – 20:52
- 4♃︎ Jupiter20:52 – 21:47
- 5♂︎ Mars21:47 – 22:42
- 6☉︎ Sun22:42 – 23:37
- 7♀︎ Venus23:37 – 00:32
- 8☿︎ Mercury00:32 – 01:27
- 9☽︎ Moon01:27 – 02:22
- 10♄︎ Saturn02:22 – 03:17
- 11♃︎ Jupiter03:17 – 04:12
- 12♂︎ Mars04:12 – 05:07
Questions
How are the planetary hours calculated in Sendai?
On Saturday, 10 April 2027, the Sun rises at 05:09 and sets at 18:07: the day lasts 12h 58m, that is twelve day hours of 1h 05m. The night, until the next sunrise at 05:07, lasts 11h 00m: twelve night hours of 55 min.
Which planet rules the first hour that day?
Saturn, from 05:09 to 06:14: 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.