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, 21 November 2026: day of Saturn
- Sunrise
- 06:23
- Sunset
- 16:20
- Next sunrise
- 06:24
A day hour lasts 50 min; a night hour, 1h 10m. Local time (Asia/Tokyo).
Day
- 1♄︎ Saturn06:23 – 07:13
- 2♃︎ Jupiter07:13 – 08:03
- 3♂︎ Mars08:03 – 08:52
- 4☉︎ Sun08:52 – 09:42
- 5♀︎ Venus09:42 – 10:32
- 6☿︎ Mercury10:32 – 11:22
- 7☽︎ Moon11:22 – 12:11
- 8♄︎ Saturn12:11 – 13:01
- 9♃︎ Jupiter13:01 – 13:51
- 10♂︎ Mars13:51 – 14:41
- 11☉︎ Sun14:41 – 15:30
- 12♀︎ Venus15:30 – 16:20
Night
- 1☿︎ Mercury16:20 – 17:30
- 2☽︎ Moon17:30 – 18:41
- 3♄︎ Saturn18:41 – 19:51
- 4♃︎ Jupiter19:51 – 21:01
- 5♂︎ Mars21:01 – 22:12
- 6☉︎ Sun22:12 – 23:22
- 7♀︎ Venus23:22 – 00:32
- 8☿︎ Mercury00:32 – 01:43
- 9☽︎ Moon01:43 – 02:53
- 10♄︎ Saturn02:53 – 04:04
- 11♃︎ Jupiter04:04 – 05:14
- 12♂︎ Mars05:14 – 06:24
Questions
How are the planetary hours calculated in Sendai?
On Saturday, 21 November 2026, the Sun rises at 06:23 and sets at 16:20: the day lasts 9h 57m, that is twelve day hours of 50 min. The night, until the next sunrise at 06:24, lasts 14h 04m: twelve night hours of 1h 10m.
Which planet rules the first hour that day?
Saturn, from 06:23 to 07:13: 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.