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, 29 July 2028: day of Saturn
- Sunrise
- 04:36
- Sunset
- 18:49
- Next sunrise
- 04:37
A day hour lasts 1h 11m; a night hour, 49 min. Local time (Asia/Tokyo).
Day
- 1♄︎ Saturn04:36 – 05:47
- 2♃︎ Jupiter05:47 – 06:58
- 3♂︎ Mars06:58 – 08:09
- 4☉︎ Sun08:09 – 09:20
- 5♀︎ Venus09:20 – 10:31
- 6☿︎ Mercury10:31 – 11:42
- 7☽︎ Moon11:42 – 12:53
- 8♄︎ Saturn12:53 – 14:04
- 9♃︎ Jupiter14:04 – 15:15
- 10♂︎ Mars15:15 – 16:27
- 11☉︎ Sun16:27 – 17:38
- 12♀︎ Venus17:38 – 18:49
Night
- 1☿︎ Mercury18:49 – 19:38
- 2☽︎ Moon19:38 – 20:27
- 3♄︎ Saturn20:27 – 21:16
- 4♃︎ Jupiter21:16 – 22:05
- 5♂︎ Mars22:05 – 22:54
- 6☉︎ Sun22:54 – 23:43
- 7♀︎ Venus23:43 – 00:32
- 8☿︎ Mercury00:32 – 01:21
- 9☽︎ Moon01:21 – 02:10
- 10♄︎ Saturn02:10 – 02:59
- 11♃︎ Jupiter02:59 – 03:48
- 12♂︎ Mars03:48 – 04:37
Questions
How are the planetary hours calculated in Sendai?
On Saturday, 29 July 2028, the Sun rises at 04:36 and sets at 18:49: the day lasts 14h 13m, that is twelve day hours of 1h 11m. The night, until the next sunrise at 04:37, lasts 9h 48m: twelve night hours of 49 min.
Which planet rules the first hour that day?
Saturn, from 04:36 to 05:47: 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.