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, 28 June 2026: day of the Sun
- Sunrise
- 04:15
- Sunset
- 19:04
- Next sunrise
- 04:15
A day hour lasts 1h 14m; a night hour, 46 min. Local time (Asia/Tokyo).
Day
- 1☉︎ Sun04:15 – 05:29
- 2♀︎ Venus05:29 – 06:43
- 3☿︎ Mercury06:43 – 07:57
- 4☽︎ Moon07:57 – 09:11
- 5♄︎ Saturn09:11 – 10:25
- 6♃︎ Jupiter10:25 – 11:39
- 7♂︎ Mars11:39 – 12:53
- 8☉︎ Sun12:53 – 14:07
- 9♀︎ Venus14:07 – 15:21
- 10☿︎ Mercury15:21 – 16:35
- 11☽︎ Moon16:35 – 17:49
- 12♄︎ Saturn17:49 – 19:04
Night
- 1♃︎ Jupiter19:04 – 19:50
- 2♂︎ Mars19:50 – 20:35
- 3☉︎ Sun20:35 – 21:21
- 4♀︎ Venus21:21 – 22:07
- 5☿︎ Mercury22:07 – 22:53
- 6☽︎ Moon22:53 – 23:39
- 7♄︎ Saturn23:39 – 00:25
- 8♃︎ Jupiter00:25 – 01:11
- 9♂︎ Mars01:11 – 01:57
- 10☉︎ Sun01:57 – 02:43
- 11♀︎ Venus02:43 – 03:29
- 12☿︎ Mercury03:29 – 04:15
Questions
How are the planetary hours calculated in Sendai?
On Sunday, 28 June 2026, the Sun rises at 04:15 and sets at 19:04: the day lasts 14h 49m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 04:15, lasts 9h 12m: twelve night hours of 46 min.
Which planet rules the first hour that day?
The Sun, from 04:15 to 05:29: 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.