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, 9 May 2028: day of Mars
- Sunrise
- 04:31
- Sunset
- 18:35
- Next sunrise
- 04:30
A day hour lasts 1h 10m; a night hour, 50 min. Local time (Asia/Tokyo).
Day
- 1♂︎ Mars04:31 – 05:41
- 2☉︎ Sun05:41 – 06:51
- 3♀︎ Venus06:51 – 08:02
- 4☿︎ Mercury08:02 – 09:12
- 5☽︎ Moon09:12 – 10:22
- 6♄︎ Saturn10:22 – 11:33
- 7♃︎ Jupiter11:33 – 12:43
- 8♂︎ Mars12:43 – 13:53
- 9☉︎ Sun13:53 – 15:04
- 10♀︎ Venus15:04 – 16:14
- 11☿︎ Mercury16:14 – 17:25
- 12☽︎ Moon17:25 – 18:35
Night
- 1♄︎ Saturn18:35 – 19:24
- 2♃︎ Jupiter19:24 – 20:14
- 3♂︎ Mars20:14 – 21:04
- 4☉︎ Sun21:04 – 21:53
- 5♀︎ Venus21:53 – 22:43
- 6☿︎ Mercury22:43 – 23:32
- 7☽︎ Moon23:32 – 00:22
- 8♄︎ Saturn00:22 – 01:11
- 9♃︎ Jupiter01:11 – 02:01
- 10♂︎ Mars02:01 – 02:51
- 11☉︎ Sun02:51 – 03:40
- 12♀︎ Venus03:40 – 04:30
Questions
How are the planetary hours calculated in Sendai?
On Tuesday, 9 May 2028, the Sun rises at 04:31 and sets at 18:35: the day lasts 14h 04m, that is twelve day hours of 1h 10m. The night, until the next sunrise at 04:30, lasts 9h 55m: twelve night hours of 50 min.
Which planet rules the first hour that day?
Mars, from 04:31 to 05:41: 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.
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.