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 Thursday, 29 October 2026: day of Jupiter
- Sunrise
- 05:58
- Sunset
- 16:41
- Next sunrise
- 06:00
A day hour lasts 54 min; a night hour, 1h 07m. Local time (Asia/Tokyo).
Day
- 1♃︎ Jupiter05:58 – 06:52
- 2♂︎ Mars06:52 – 07:45
- 3☉︎ Sun07:45 – 08:39
- 4♀︎ Venus08:39 – 09:32
- 5☿︎ Mercury09:32 – 10:26
- 6☽︎ Moon10:26 – 11:20
- 7♄︎ Saturn11:20 – 12:13
- 8♃︎ Jupiter12:13 – 13:07
- 9♂︎ Mars13:07 – 14:00
- 10☉︎ Sun14:00 – 14:54
- 11♀︎ Venus14:54 – 15:47
- 12☿︎ Mercury15:47 – 16:41
Night
- 1☽︎ Moon16:41 – 17:47
- 2♄︎ Saturn17:47 – 18:54
- 3♃︎ Jupiter18:54 – 20:00
- 4♂︎ Mars20:00 – 21:07
- 5☉︎ Sun21:07 – 22:13
- 6♀︎ Venus22:13 – 23:20
- 7☿︎ Mercury23:20 – 00:27
- 8☽︎ Moon00:27 – 01:33
- 9♄︎ Saturn01:33 – 02:40
- 10♃︎ Jupiter02:40 – 03:46
- 11♂︎ Mars03:46 – 04:53
- 12☉︎ Sun04:53 – 06:00
Questions
How are the planetary hours calculated in Sendai?
On Thursday, 29 October 2026, the Sun rises at 05:58 and sets at 16:41: the day lasts 10h 42m, that is twelve day hours of 54 min. The night, until the next sunrise at 06:00, lasts 13h 19m: twelve night hours of 1h 07m.
Which planet rules the first hour that day?
Jupiter, from 05:58 to 06:52: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.