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, 2 August 2026: day of the Sun
- Sunrise
- 04:39
- Sunset
- 18:45
- Next sunrise
- 04:40
A day hour lasts 1h 11m; a night hour, 50 min. Local time (Asia/Tokyo).
Day
- 1☉︎ Sun04:39 – 05:49
- 2♀︎ Venus05:49 – 07:00
- 3☿︎ Mercury07:00 – 08:10
- 4☽︎ Moon08:10 – 09:21
- 5♄︎ Saturn09:21 – 10:32
- 6♃︎ Jupiter10:32 – 11:42
- 7♂︎ Mars11:42 – 12:53
- 8☉︎ Sun12:53 – 14:03
- 9♀︎ Venus14:03 – 15:14
- 10☿︎ Mercury15:14 – 16:24
- 11☽︎ Moon16:24 – 17:35
- 12♄︎ Saturn17:35 – 18:45
Night
- 1♃︎ Jupiter18:45 – 19:35
- 2♂︎ Mars19:35 – 20:24
- 3☉︎ Sun20:24 – 21:14
- 4♀︎ Venus21:14 – 22:03
- 5☿︎ Mercury22:03 – 22:53
- 6☽︎ Moon22:53 – 23:42
- 7♄︎ Saturn23:42 – 00:32
- 8♃︎ Jupiter00:32 – 01:22
- 9♂︎ Mars01:22 – 02:11
- 10☉︎ Sun02:11 – 03:01
- 11♀︎ Venus03:01 – 03:50
- 12☿︎ Mercury03:50 – 04:40
Questions
How are the planetary hours calculated in Sendai?
On Sunday, 2 August 2026, the Sun rises at 04:39 and sets at 18:45: the day lasts 14h 06m, that is twelve day hours of 1h 11m. The night, until the next sunrise at 04:40, lasts 9h 54m: twelve night hours of 50 min.
Which planet rules the first hour that day?
The Sun, from 04:39 to 05:49: 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.