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 Sunday, 8 June 2025: day of the Sun
- Sunrise
- 04:13
- Sunset
- 18:58
- Next sunrise
- 04:12
A day hour lasts 1h 14m; a night hour, 46 min. Local time (Asia/Tokyo).
Day
- 1☉︎ Sun04:13 – 05:26
- 2♀︎ Venus05:26 – 06:40
- 3☿︎ Mercury06:40 – 07:54
- 4☽︎ Moon07:54 – 09:08
- 5♄︎ Saturn09:08 – 10:21
- 6♃︎ Jupiter10:21 – 11:35
- 7♂︎ Mars11:35 – 12:49
- 8☉︎ Sun12:49 – 14:03
- 9♀︎ Venus14:03 – 15:17
- 10☿︎ Mercury15:17 – 16:30
- 11☽︎ Moon16:30 – 17:44
- 12♄︎ Saturn17:44 – 18:58
Night
- 1♃︎ Jupiter18:58 – 19:44
- 2♂︎ Mars19:44 – 20:30
- 3☉︎ Sun20:30 – 21:16
- 4♀︎ Venus21:16 – 22:03
- 5☿︎ Mercury22:03 – 22:49
- 6☽︎ Moon22:49 – 23:35
- 7♄︎ Saturn23:35 – 00:21
- 8♃︎ Jupiter00:21 – 01:08
- 9♂︎ Mars01:08 – 01:54
- 10☉︎ Sun01:54 – 02:40
- 11♀︎ Venus02:40 – 03:26
- 12☿︎ Mercury03:26 – 04:12
Questions
How are the planetary hours calculated in Sendai?
On Sunday, 8 June 2025, the Sun rises at 04:13 and sets at 18:58: the day lasts 14h 45m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 04:12, lasts 9h 15m: twelve night hours of 46 min.
Which planet rules the first hour that day?
The Sun, from 04:13 to 05:26: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.