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, 2 January 2027: day of Saturn
- Sunrise
- 06:53
- Sunset
- 16:27
- Next sunrise
- 06:53
A day hour lasts 48 min; a night hour, 1h 12m. Local time (Asia/Tokyo).
Day
- 1♄︎ Saturn06:53 – 07:41
- 2♃︎ Jupiter07:41 – 08:29
- 3♂︎ Mars08:29 – 09:16
- 4☉︎ Sun09:16 – 10:04
- 5♀︎ Venus10:04 – 10:52
- 6☿︎ Mercury10:52 – 11:40
- 7☽︎ Moon11:40 – 12:28
- 8♄︎ Saturn12:28 – 13:15
- 9♃︎ Jupiter13:15 – 14:03
- 10♂︎ Mars14:03 – 14:51
- 11☉︎ Sun14:51 – 15:39
- 12♀︎ Venus15:39 – 16:27
Night
- 1☿︎ Mercury16:27 – 17:39
- 2☽︎ Moon17:39 – 18:51
- 3♄︎ Saturn18:51 – 20:03
- 4♃︎ Jupiter20:03 – 21:16
- 5♂︎ Mars21:16 – 22:28
- 6☉︎ Sun22:28 – 23:40
- 7♀︎ Venus23:40 – 00:52
- 8☿︎ Mercury00:52 – 02:04
- 9☽︎ Moon02:04 – 03:16
- 10♄︎ Saturn03:16 – 04:29
- 11♃︎ Jupiter04:29 – 05:41
- 12♂︎ Mars05:41 – 06:53
Questions
How are the planetary hours calculated in Sendai?
On Saturday, 2 January 2027, the Sun rises at 06:53 and sets at 16:27: the day lasts 9h 34m, that is twelve day hours of 48 min. The night, until the next sunrise at 06:53, lasts 14h 26m: twelve night hours of 1h 12m.
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.