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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 Tuesday, 18 August 2026: day of Mars

Sunrise
04:53
Sunset
18:26
Next sunrise
04:54

A day hour lasts 1h 08m; a night hour, 52 min. Local time (Asia/Tokyo).

Day

  1. 1♂︎ Mars04:53 – 06:01
  2. 2☉︎ Sun06:01 – 07:08
  3. 3♀︎ Venus07:08 – 08:16
  4. 4☿︎ Mercury08:16 – 09:24
  5. 5☽︎ Moon09:24 – 10:32
  6. 6♄︎ Saturn10:32 – 11:40
  7. 7♃︎ Jupiter11:40 – 12:47
  8. 8♂︎ Mars12:47 – 13:55
  9. 9☉︎ Sun13:55 – 15:03
  10. 10♀︎ Venus15:03 – 16:11
  11. 11☿︎ Mercury16:11 – 17:19
  12. 12☽︎ Moon17:19 – 18:26

Night

  1. 1♄︎ Saturn18:26 – 19:19
  2. 2♃︎ Jupiter19:19 – 20:11
  3. 3♂︎ Mars20:11 – 21:03
  4. 4☉︎ Sun21:03 – 21:56
  5. 5♀︎ Venus21:56 – 22:48
  6. 6☿︎ Mercury22:48 – 23:40
  7. 7☽︎ Moon23:40 – 00:32
  8. 8♄︎ Saturn00:32 – 01:25
  9. 9♃︎ Jupiter01:25 – 02:17
  10. 10♂︎ Mars02:17 – 03:09
  11. 11☉︎ Sun03:09 – 04:01
  12. 12♀︎ Venus04:01 – 04:54

Questions

How are the planetary hours calculated in Sendai?

On Tuesday, 18 August 2026, the Sun rises at 04:53 and sets at 18:26: the day lasts 13h 34m, that is twelve day hours of 1h 08m. The night, until the next sunrise at 04:54, lasts 10h 27m: twelve night hours of 52 min.

Which planet rules the first hour that day?

Mars, from 04:53 to 06:01: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.

My sky on my chart

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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.