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 Monday, 3 August 2026: day of the Moon
- Sunrise
- 04:40
- Sunset
- 18:44
- Next sunrise
- 04:41
A day hour lasts 1h 10m; a night hour, 50 min. Local time (Asia/Tokyo).
Day
- 1☽︎ Moon04:40 – 05:50
- 2♄︎ Saturn05:50 – 07:00
- 3♃︎ Jupiter07:00 – 08:11
- 4♂︎ Mars08:11 – 09:21
- 5☉︎ Sun09:21 – 10:32
- 6♀︎ Venus10:32 – 11:42
- 7☿︎ Mercury11:42 – 12:52
- 8☽︎ Moon12:52 – 14:03
- 9♄︎ Saturn14:03 – 15:13
- 10♃︎ Jupiter15:13 – 16:23
- 11♂︎ Mars16:23 – 17:34
- 12☉︎ Sun17:34 – 18:44
Night
- 1♀︎ Venus18:44 – 19:34
- 2☿︎ Mercury19:34 – 20:24
- 3☽︎ Moon20:24 – 21:13
- 4♄︎ Saturn21:13 – 22:03
- 5♃︎ Jupiter22:03 – 22:53
- 6♂︎ Mars22:53 – 23:42
- 7☉︎ Sun23:42 – 00:32
- 8♀︎ Venus00:32 – 01:22
- 9☿︎ Mercury01:22 – 02:12
- 10☽︎ Moon02:12 – 03:01
- 11♄︎ Saturn03:01 – 03:51
- 12♃︎ Jupiter03:51 – 04:41
Questions
How are the planetary hours calculated in Sendai?
On Monday, 3 August 2026, the Sun rises at 04:40 and sets at 18:44: the day lasts 14h 05m, that is twelve day hours of 1h 10m. The night, until the next sunrise at 04:41, lasts 9h 56m: twelve night hours of 50 min.
Which planet rules the first hour that day?
The Moon, from 04:40 to 05:50: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.