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, 25 August 2027: day of Mercury
- Sunrise
- 04:59
- Sunset
- 18:17
- Next sunrise
- 05:00
A day hour lasts 1h 07m; a night hour, 54 min. Local time (Asia/Tokyo).
Day
- 1☿︎ Mercury04:59 – 06:05
- 2☽︎ Moon06:05 – 07:12
- 3♄︎ Saturn07:12 – 08:18
- 4♃︎ Jupiter08:18 – 09:25
- 5♂︎ Mars09:25 – 10:31
- 6☉︎ Sun10:31 – 11:38
- 7♀︎ Venus11:38 – 12:44
- 8☿︎ Mercury12:44 – 13:51
- 9☽︎ Moon13:51 – 14:58
- 10♄︎ Saturn14:58 – 16:04
- 11♃︎ Jupiter16:04 – 17:11
- 12♂︎ Mars17:11 – 18:17
Night
- 1☉︎ Sun18:17 – 19:11
- 2♀︎ Venus19:11 – 20:04
- 3☿︎ Mercury20:04 – 20:58
- 4☽︎ Moon20:58 – 21:51
- 5♄︎ Saturn21:51 – 22:45
- 6♃︎ Jupiter22:45 – 23:38
- 7♂︎ Mars23:38 – 00:32
- 8☉︎ Sun00:32 – 01:26
- 9♀︎ Venus01:26 – 02:19
- 10☿︎ Mercury02:19 – 03:13
- 11☽︎ Moon03:13 – 04:06
- 12♄︎ Saturn04:06 – 05:00
Questions
How are the planetary hours calculated in Sendai?
On Wednesday, 25 August 2027, the Sun rises at 04:59 and sets at 18:17: the day lasts 13h 18m, that is twelve day hours of 1h 07m. The night, until the next sunrise at 05:00, lasts 10h 43m: twelve night hours of 54 min.
Which planet rules the first hour that day?
Mercury, from 04:59 to 06:05: 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.