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, 5 June 2025: day of Jupiter
- Sunrise
- 04:13
- Sunset
- 18:56
- Next sunrise
- 04:13
A day hour lasts 1h 14m; a night hour, 46 min. Local time (Asia/Tokyo).
Day
- 1♃︎ Jupiter04:13 – 05:27
- 2♂︎ Mars05:27 – 06:40
- 3☉︎ Sun06:40 – 07:54
- 4♀︎ Venus07:54 – 09:08
- 5☿︎ Mercury09:08 – 10:21
- 6☽︎ Moon10:21 – 11:35
- 7♄︎ Saturn11:35 – 12:48
- 8♃︎ Jupiter12:48 – 14:02
- 9♂︎ Mars14:02 – 15:15
- 10☉︎ Sun15:15 – 16:29
- 11♀︎ Venus16:29 – 17:43
- 12☿︎ Mercury17:43 – 18:56
Night
- 1☽︎ Moon18:56 – 19:43
- 2♄︎ Saturn19:43 – 20:29
- 3♃︎ Jupiter20:29 – 21:15
- 4♂︎ Mars21:15 – 22:02
- 5☉︎ Sun22:02 – 22:48
- 6♀︎ Venus22:48 – 23:35
- 7☿︎ Mercury23:35 – 00:21
- 8☽︎ Moon00:21 – 01:07
- 9♄︎ Saturn01:07 – 01:54
- 10♃︎ Jupiter01:54 – 02:40
- 11♂︎ Mars02:40 – 03:27
- 12☉︎ Sun03:27 – 04:13
Questions
How are the planetary hours calculated in Sendai?
On Thursday, 5 June 2025, the Sun rises at 04:13 and sets at 18:56: the day lasts 14h 43m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 04:13, lasts 9h 17m: twelve night hours of 46 min.
Which planet rules the first hour that day?
Jupiter, from 04:13 to 05:27: 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.