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Planetary hours · Sendai (Japan)

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, 18 December 2025: day of Jupiter

Sunrise
06:47
Sunset
16:18
Next sunrise
06:48

A day hour lasts 48 min; a night hour, 1h 13m. Local time (Asia/Tokyo).

Day

  1. 1♃︎ Jupiter06:47 – 07:35
  2. 2♂︎ Mars07:35 – 08:22
  3. 3☉︎ Sun08:22 – 09:10
  4. 4♀︎ Venus09:10 – 09:57
  5. 5☿︎ Mercury09:57 – 10:45
  6. 6☽︎ Moon10:45 – 11:33
  7. 7♄︎ Saturn11:33 – 12:20
  8. 8♃︎ Jupiter12:20 – 13:08
  9. 9♂︎ Mars13:08 – 13:55
  10. 10☉︎ Sun13:55 – 14:43
  11. 11♀︎ Venus14:43 – 15:30
  12. 12☿︎ Mercury15:30 – 16:18

Night

  1. 1☽︎ Moon16:18 – 17:30
  2. 2♄︎ Saturn17:30 – 18:43
  3. 3♃︎ Jupiter18:43 – 19:55
  4. 4♂︎ Mars19:55 – 21:08
  5. 5☉︎ Sun21:08 – 22:20
  6. 6♀︎ Venus22:20 – 23:33
  7. 7☿︎ Mercury23:33 – 00:45
  8. 8☽︎ Moon00:45 – 01:58
  9. 9♄︎ Saturn01:58 – 03:10
  10. 10♃︎ Jupiter03:10 – 04:23
  11. 11♂︎ Mars04:23 – 05:35
  12. 12☉︎ Sun05:35 – 06:48

Other cities · Japan

Questions

How are the planetary hours calculated in Sendai?

On Thursday, 18 December 2025, the Sun rises at 06:47 and sets at 16:18: the day lasts 9h 30m, that is twelve day hours of 48 min. The night, until the next sunrise at 06:48, lasts 14h 30m: twelve night hours of 1h 13m.

Which planet rules the first hour that day?

Jupiter, from 06:47 to 07:35: 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.

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Calendars

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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.