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 Wednesday, 14 October 2026: day of Mercury
- Sunrise
- 05:43
- Sunset
- 17:00
- Next sunrise
- 05:44
A day hour lasts 56 min; a night hour, 1h 04m. Local time (Asia/Tokyo).
Day
- 1☿︎ Mercury05:43 – 06:40
- 2☽︎ Moon06:40 – 07:36
- 3♄︎ Saturn07:36 – 08:33
- 4♃︎ Jupiter08:33 – 09:29
- 5♂︎ Mars09:29 – 10:25
- 6☉︎ Sun10:25 – 11:22
- 7♀︎ Venus11:22 – 12:18
- 8☿︎ Mercury12:18 – 13:15
- 9☽︎ Moon13:15 – 14:11
- 10♄︎ Saturn14:11 – 15:07
- 11♃︎ Jupiter15:07 – 16:04
- 12♂︎ Mars16:04 – 17:00
Night
- 1☉︎ Sun17:00 – 18:04
- 2♀︎ Venus18:04 – 19:08
- 3☿︎ Mercury19:08 – 20:11
- 4☽︎ Moon20:11 – 21:15
- 5♄︎ Saturn21:15 – 22:19
- 6♃︎ Jupiter22:19 – 23:22
- 7♂︎ Mars23:22 – 00:26
- 8☉︎ Sun00:26 – 01:30
- 9♀︎ Venus01:30 – 02:33
- 10☿︎ Mercury02:33 – 03:37
- 11☽︎ Moon03:37 – 04:41
- 12♄︎ Saturn04:41 – 05:44
Questions
How are the planetary hours calculated in Sendai?
On Wednesday, 14 October 2026, the Sun rises at 05:43 and sets at 17:00: the day lasts 11h 17m, that is twelve day hours of 56 min. The night, until the next sunrise at 05:44, lasts 12h 44m: twelve night hours of 1h 04m.
Which planet rules the first hour that day?
Mercury, from 05:43 to 06:40: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.