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 Friday, 21 May 2027: day of Venus
- Sunrise
- 04:21
- Sunset
- 18:45
- Next sunrise
- 04:20
A day hour lasts 1h 12m; a night hour, 48 min. Local time (Asia/Tokyo).
Day
- 1♀︎ Venus04:21 – 05:33
- 2☿︎ Mercury05:33 – 06:45
- 3☽︎ Moon06:45 – 07:57
- 4♄︎ Saturn07:57 – 09:09
- 5♃︎ Jupiter09:09 – 10:21
- 6♂︎ Mars10:21 – 11:33
- 7☉︎ Sun11:33 – 12:45
- 8♀︎ Venus12:45 – 13:57
- 9☿︎ Mercury13:57 – 15:09
- 10☽︎ Moon15:09 – 16:21
- 11♄︎ Saturn16:21 – 17:33
- 12♃︎ Jupiter17:33 – 18:45
Night
- 1♂︎ Mars18:45 – 19:33
- 2☉︎ Sun19:33 – 20:21
- 3♀︎ Venus20:21 – 21:09
- 4☿︎ Mercury21:09 – 21:57
- 5☽︎ Moon21:57 – 22:45
- 6♄︎ Saturn22:45 – 23:32
- 7♃︎ Jupiter23:32 – 00:20
- 8♂︎ Mars00:20 – 01:08
- 9☉︎ Sun01:08 – 01:56
- 10♀︎ Venus01:56 – 02:44
- 11☿︎ Mercury02:44 – 03:32
- 12☽︎ Moon03:32 – 04:20
Questions
How are the planetary hours calculated in Sendai?
On Friday, 21 May 2027, the Sun rises at 04:21 and sets at 18:45: the day lasts 14h 24m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 04:20, lasts 9h 35m: twelve night hours of 48 min.
Which planet rules the first hour that day?
Venus, from 04:21 to 05:33: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.