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, 2 July 2026: day of Jupiter
- Sunrise
- 04:17
- Sunset
- 19:03
- Next sunrise
- 04:17
A day hour lasts 1h 14m; a night hour, 46 min. Local time (Asia/Tokyo).
Day
- 1♃︎ Jupiter04:17 – 05:30
- 2♂︎ Mars05:30 – 06:44
- 3☉︎ Sun06:44 – 07:58
- 4♀︎ Venus07:58 – 09:12
- 5☿︎ Mercury09:12 – 10:26
- 6☽︎ Moon10:26 – 11:40
- 7♄︎ Saturn11:40 – 12:54
- 8♃︎ Jupiter12:54 – 14:08
- 9♂︎ Mars14:08 – 15:22
- 10☉︎ Sun15:22 – 16:36
- 11♀︎ Venus16:36 – 17:49
- 12☿︎ Mercury17:49 – 19:03
Night
- 1☽︎ Moon19:03 – 19:49
- 2♄︎ Saturn19:49 – 20:36
- 3♃︎ Jupiter20:36 – 21:22
- 4♂︎ Mars21:22 – 22:08
- 5☉︎ Sun22:08 – 22:54
- 6♀︎ Venus22:54 – 23:40
- 7☿︎ Mercury23:40 – 00:26
- 8☽︎ Moon00:26 – 01:12
- 9♄︎ Saturn01:12 – 01:59
- 10♃︎ Jupiter01:59 – 02:45
- 11♂︎ Mars02:45 – 03:31
- 12☉︎ Sun03:31 – 04:17
Questions
How are the planetary hours calculated in Sendai?
On Thursday, 2 July 2026, the Sun rises at 04:17 and sets at 19:03: the day lasts 14h 47m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 04:17, lasts 9h 14m: twelve night hours of 46 min.
Which planet rules the first hour that day?
Jupiter, from 04:17 to 05:30: 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.
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.